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_ Syllogeus includes papers on natural sciences and closely related topics that are not immediately appropriate
ion in other publications: and are issued in either English or French or both. Syllogeus appears at

ervals and individual issues are available rom the ibrary and the Director, National Museum of

awa, KIA OMB, Can : La LS ATEN ex AE MNT Mr”

THE RARE VASCULAR PLANTS OF ONTARIO

by

George W. Argus and David J. White

National Museum of Natural Sciences
Botany Division
Ottawa, Ontario, K1A OM8

June 1977

PREFACE

This list is the first in a proposed series dealing with the rare vascular
plants of the provinces and territories of Canada. It was preceded by two
versions at a preliminary level which served as a means of communica-
tion with the botanical and naturalist communities in Ontario. Over 75
lists were circulated and from these we received numerous comments
that were considered in the preparation of the present list. Preliminary
lists are available of the rare plants of British Columbia, Alberta,
Saskatchewan, Manitoba, Quebec, Nova Scotia and Newfoundland and
Labrador for those who would like to have some input into the preparation
of the final working-lists of those provinces.

The introduction to this list consists essentially of two parts. The first
part, including sections A through E, applies generally to all the lists of
rare plants that are in preparation. The second part, including sections F
through H contains information pertinent to the Ontario list. The
introduction is followed by the list of the rare vascular plants of Ontario, a
bibliography, and three appendices including two lists of rejected names,
and a systematic list of the rare vascular plants of Ontario.

We are aware that our information about many of the plants on this list
is very inadequate and that much work is yet to be done before a
comprehensive and completely documented list can be realized. How-
ever, we have attempted to assemble the best information available to us
at this time in the hope that it will be of use to those concerned with the
natural environment. We are looking forward to receiving your comments
and suggestions and we plan to publish revised versions of the list as our
knowledge of the rare vascular plants of Ontario is refined.

George W. Argus
David J. White
January 1977

ADDITIONS, DELETIONS, COMMENTS AND CORRECTIONS

Please send information to:

The Rare and Endangered Plants Project

Botany Division
National Museum of Natural Sciences
Ottawa, Ontario

K1A OM8

We would appreciate as complete documentation as possible
for the addition or deletion of names from the list.

Digitized by the Internet Archive
in 2011 with funding from
California Academy of Sciences Library

tip://www.archive.org/details/syl

TABLE OF CONTENTS

2 ~~ Preface
7 Introduction
A. The Preliminary Lists 7
Definitions 7
Organization of the Lists 7
Use of the Lists 8
Future Plans 8
The Situation in Ontario 9
Distribution Patterns of Rare Plants in Ontario 9
Acknowledgements 10
11 The List of the Rare Vascular Plants of Ontario
50 Bibliography
58 Appendices
I. Unverified Reports 58
Mee Alien or Doubtfully Native Plants 58
(LE List of the Rare Vascular Plants of Ontario in Taxonomic
Sequence 59

INTRODUCTION

It has long been recognized that there is a need for
scientific information on the rare and endangered
plants of Canada so that appropriate conservation
measures may be taken to protect them. In 1973 the
Systematics and Phytogeography Section of the Cana-
dian Botanical Association formed a Rare and Endan-
gered Plants Committee charged with inventorying the
rare and endangered plants of Canada. As a contri-
bution to this project, the National Herbarium began
to assemble data on the rare plants of the provinces
and territories. As the total inventory becomes availa-
ble it should be useful not only in contributing to the
preservation of individual species, but in recognizing
habitats and geographical areas that require protec-
tion because of their unique flora. Some plants that
once were a part of the Canadian flora have become
extinct or extirpated during the past 75 years. Other
plants have been so reduced in numbers that they are
facing extirpation and certain habitats that were once
widespread have been so extensively modified that the
continued existence of many plants is threatened.
While it is true that the preservation of some plants
may be ensured at the individual level (e.g., growing
plants in a botanical garden) it will be necessary in
most cases to preserve geographical areas sufficiently
large to protect the habitats of these unique plants.

In compiling these lists we concerned ourselves only
with rare plants because the data necessary to
evaluate the threatened or endangered status of most
plants in the Canadian flora were not available. As the
work progressed we became aware that even informa-
tion on rarity was scarce and that there is a great need
for field study and taxonomic and phytogeographic
research on the rare plants of Canada.

Our decision to prepare inventories for the prov-
inces and territories rather than to compile a single
national list was based on several considerations.
First of all there is more information available (in the
literature, unpublished data and maps and from
personal experience) at the regional level than at the
national level. More importantly, if plants are to be
given legislative protection, the legislation will have to
originate with the provinces and it is therefore
desirable to have as much information as possible to
aid the provincial authorities. Some provinces already
have endangered species legislation. However, they
require well-documented lists of candidate plants to
be considered for inclusion under their legislation.
Furthermore, information on regionally rare plants,
that may or may not be rare elsewhere, is important to
identify natural areas that deserve special considera-
tion within these regions.

A. The Preliminary Lists

In the beginning, preliminary lists were compiled
from the literature (including regional and local floras,
monographs, phytogeographic papers and botanical
and naturalist journals), from the Check Sheets
prepared for the International Biological Program,
Conservation of Terresterial Biological Communities
(IBP-CT), from personal communications and from
the examination of specimens in the herbaria of the
Museum of Natural Sciences (CAN) and the Depart-
ment of Agriculture (DAO). These lists were distrib-
uted to botanists and others along with a request for
comments and additional information. This process
resulted in the present inventory.

Plants are listed alphabetically by their scientific
names. For each plant the following information may
be given: synonyms, references documenting its
status as a rare or endangered plant, its distribution
in Canada and Alaska, its distribution in Ontario,
references to published or unpublished distribution
maps and comments on its rare status in Canada,
special protection and other comments.

To be included, a plant must be native and rare in
the province or territory under consideration. How-
ever, it need not be restricted to that province or
territory. Taxonomic ranks of species, subspecies and
varieties are included but forms and hybrids are not.

B. Definitions

Plant is used in the text to indicate collectively all
the individuals referable to a plant name.

A rare plant is one that has a small population
within the province or territory. It may be restricted to
a small geographical area or it may occur sparsely over
a wide area. By the phrase, ‘‘a small geographical
area’, we mean an area about the size of the
Carolinian Zone of the deciduous forest, a band about
50 mi. wide just north of Lake Erie in southern Ontario
or the narrow band of tundra along the Hudson Bay
coast.

A threatened plant is one that is likely to become
endangered within the foreseeable future over all or a
significant portion of its range in the province or
territory.

An endangered plant is one in danger of extirpation
throughout all of a significant portion of its range in
the province or territory.

C. Organization of the lists

The nomenclature used in the lists is not based on
any one authority and synonyms are given whenever it

is necessary for an understanding of the references
that have been used.

In order to document as fully as possible the status
of the plants included in this list we have cited
references which are the basis for the inclusion of
each name. Sometimes a reference is a published
paper including a distribution map, or it may be a
comment in a local flora, a personal communication
from a knowledgeable individual, specimens in one of
the Ottawa herbaria or simply a distribution map on
which we may have based a judgement. In some cases
the documentation is thorough and incontrovertible
whereas in others it is sketchy or based on outdated
information and in need of checking. We have in-
cluded all plants for which we could find a credible
reference supporting its rareness, preferring to err on
the side of including too many rather than too few
plants. We have not attempted, at this time, to re-
examine and verify the identity of all of the specimens
which serve as the basis for reports or distribution
maps. However, as the lists are refined, specimens will
be studied and errors will be recognized and cor-
rected. A file is kept at the National Herbarium of
those plants that have been included and later
rejected, giving the reasons for their rejection. The
names of some rejected plants are included in the
appendices. Appendix | (Unverified Reports) includes
those plants that have been rejected because they are
based on misidentifications, they lack documenting
specimens or because of errors in label data. Appendix
Il (Alien or Doubtfully Native Plants) includes plants
known or suspected to be alien in Ontario.

An index of distribution maps of rare Canadian
plants, published and unpublished, is being compiled
and references to maps are given for as many plants
as possible. If a cited map covers only a portion of the
plant’s total North American range that fact is
indicated after the reference. The general distribution
in Canada and Alaska is given for each plant based on
the available maps and the literature. We have
expressed the range in terms of province and state in
two tiers across the region roughly from west to east.
The first from Alaska to the Northwest Territories
(Aka-YT-NWT) and a second from British Columbia to
Labrador (BC-Alta-Sask-Man-Ont-PQ-NB-PEI-NS-Nfld-
Lab). A dash between provinces, indicates a continu-
ous distribution and a comma indicates a discontinu-
ous distribution. The exception to this being the
Alaska-Northwest Territories tier, which is always
followed by a comma to indicate the end of the first
tier.

In the case of plants that may be common in one
part of the province or territory but have a small
disjunct population in another part of the same

province or territory we have indicated this fact in the
range description.

Finally, comments may be included concerning the
rare status of the plant throughout Canada, whether
the plant is endangered, extirpated or possibly alien in
the province, its status in the United States or on
special legal protection offered the plant.

As an aid to taxonomists and others who may find a
taxonomically arranged list of names useful, we have
included in Appendix Ill a list of rare plants and
synonyms arranged in family order following Gray’s
Manual of Botany (Fernald 1950). The genera and
species within the families are arranged
alphabetically.

D. Use of the Lists

The lists will be useful in providing the scientific
information that is necessary for the protection of
certain rare plants. Land planners and policy makers
will want to know those plants that should be given
special consideration in the evaluation of development
plans. As detailed distribution maps are prepared for
each plant, areas of concentration of rare plants will
become apparent and habitats and natural areas that
should be protected will be recognized. Botanists and
naturalists may want to use the lists as a source of
names of plants that require field-checking and
detailed mapping. This should lead to an assessment
of the population status of the rare plants, a determi-
nation of their ecological requirements and an im-
proved knowledge of threats to their existence.
However, until the plants on the lists have been
thoroughly field-checked, the lists should be regarded
as provisional.

E. Future Plans

At the National Herbarium we have started a center
for the accumulation, storage and publication of
information on the distribution, population status,
ecological requirements and on the rare and endan-
gered status of the plants of Canada. One of its
important projects will be the mapping, by date of
collection, of herbarium specimens to be followed by
the field-checking of the plant’s present population
status. Centers of rarity within the provinces and
territories wil! be recognized and the need for the
protection of these areas or of the unique habitats
within them will be determined. We hope that the
center will become a repository for information on rare
plants. The center will be accessible to all interested
persons and it will periodically publish updated lists
and reports on particular areas or plants. We hope to
be able to assist local botanists in bringing endan-
gered plants to the attention of the appropriate

authorities so that measures to ensure the protection
of those plants will be initiated.

It is clear that no one person or group has sufficient
knowledge of the flora of Canada to make a project of
this magnitude a success without the support of all
botanists and naturalists. We request that you make
your knowledge available to us by sending us com-
ments on the present list. Suggested additions or
deletions should be supported by documentation. If a
specimen exists, a photocopy of the label or the label
data should be included. References to, or copies of,
published or unpublished distribution maps are
sought. The data bank of distribution maps and
information on rare plants will be available for
consultation by any interested person. However, we
will restrict access to information on the exact location
of rare plants at the request of the informant or where
we feel it is necessary to protect these populations.
Unpublished distribution maps will not be released
without the permission of the compiler.

The address for comments or inquiries is given on
page 3.

F. The Situation in Ontario

In Ontario there is a growing concern about the
threats to the flora and fauna. This concern is
reflected by legislative action to prevent the loss of
species and habitats. The Endangered Species Act of
1971 provides for the protection of species and their
habitats when they are threatened with extinction or
extirpation by various factors including the destruc-
tion of habitats and over-exploitation. The Provincial
Parks Act of 1970 provides for a separate class of
parks, the Nature Reserves, the primary purpose of
which is the strict preservation of natural features for
scientific and educational purposes. In addition to the
special parks, areas may be zoned within existing
parks to enable the protection of specific areas for
nature reserve purposes.

At other governmental levels concern is also being
expressed for the natural environment. In the course
of preparing official policy plans some regional munici-
palities, including Waterloo and Ottawa-Carleton,
have conducted surveys of environmentally sensitive
areas in recognition of their importance to the well-
being of the community.

The present list was conceived as an inventory of
candidate plants for inclusion under the Endangered
Species Act, and as support for giving special protec-
tion to environmentally sensitive areas and nature
reserves.

G. Distribution Patterns of Rare Plants in Ontario

The available information does not permit a de-
tailed analysis of the various distribution patterns
shown by plants that are rare in Ontario. However, an
examination of the maps of some of them shows that
they can be grouped into several categories reflecting
habitat and geographical affinities. There are no rare
plants that are endemic to the province; all of these
plants also occur elsewhere. They are here at the edge
of their range, as long-range disjuncts or as wide-
spread but scarce plants. Sometimes they occur in
localized unusual habitats or in habitats of limited
distribution in the province.

The most conspicuous group is composed of those
plants of Carolinian affinities that occur in the
deciduous forest region of southern Ontario. Examples
are: Campsis radicans, Carya glabra, Cenchrus longis-
pinus, Hydrastis canadensis, Iris brevicaulis, Jefferso-
nia diphylla, Magnolia acuminata, Nyssa sylvatica and
Sanicula canadensis. These plants are here at the
northern edge of their range. Usually they are a part of
a continuous population, but some, like Tilia hetero-
phylla and Triosteum angustifolium, are northern
disjuncts of southern populations.

A similar group of plants includes those with
Atlantic Coastal Plain affinities. Most of these plants
including Aster acuminatus, Pinus rigida and Rhexia
virginica are at the western edge of their range in
southeastern Ontario. Whereas Myrica pensylvanica is
a long-range disjunct from the coastal plain.

The prairie outliers and limestone alvars in south-
ern Ontario, on the Bruce Peninsula and Manitoulin
Island, contain plants whose main range is in the
Great Plains of North America. Plants such as Amor-
pha canescens, Asclepias ovalifolia, Bouteloua curti-
pendula, Cirsium drummondii, Geum triflorum and
Hymenoxys acaulis occur in Ontatic as scattered,
disjunct populations.

Many plants with western affinities, particularly
with the Rocky Mountains, occur in Ontario as disjunct
populations. Cystopteris montana, Dryas drummondii,
Oplopanax horridus, Piperia unalascensis and Vaccin-
ium ovalifolium occur in Ontario only in the Great
Lakes region. Others such as Festuca brachyphylla and
Oxytropis splendens also have populations in northern
Ontario in addition to the Great Lakes population.
Whereas others such as Astragalus americanus,
Juncus ensifolius and Salix brachycarpa only occur in
northern Ontario as disjuncts from their main western
populations.

The tundra habitats on the coast of Hudson and
James Bays contain species with Arctic affinities that
do not occur elsewhere in Ontario. Armeria maritima,

10

Draba alpina, Dupontia fisheri, Mertensia maritima,
Ranunculus pallasii and Salix arctophila are examples
of tundra plants that occur in northern Ontario at the
southern edge of a continuous range. Others such as
Festuca baffinensis, Hierochloe pauciflora, Montia
fontana and Parnassia kotzebuei occur along the
northern coast disjunct from their main northern
populations.

There.are a number of interesting plants of northern
affinities that not only occur in northern Ontario but
also have unique disjunct populations in ravines and
on cliff faces along the north shore of Lake Superior.
These include Carex heleonastes, Tofieldia pusilla,
Trisetum triflorum ssp. molle, and Woodsia glabella.

There are other species that occur only in the Great
Lakes region. These include the Great Lakes endemics
Agropyron psammophilum, Arnica whitneyi, Cirsium
pitcheri, Iris lacustris and Solidago houghtonii.

Those plants that are wide-ranging but scarce
wherever they occur are the most difficult to document
because distribution maps do not give an accurate
impression of their abundance. For example, Dryop-
teris goldiana, Fimbristylis drummondii and the or-
chids Cypripedium arietinum, Listera borealis, Platan-
thera flava and P. leucophaea are wide-ranging but
rare wherever they occur in Ontario.

Information on plants that occurred in Ontario in
historical times but no longer occur in the wild is
difficult to evaluate. However, there are many plants
that were collected fifty to one hundred years ago but
have not been collected since that may be in the
category of extirpated plants. Included here are
Aristida dichotoma, Cercis canadensis (reintroduced
as an ornamental), Mikania scandens, Platanthera
ciliaris and Valerianella chenopodifolia.

Although there are no rare plants that are unique to
Ontario there are many that have become rare
throughout their range including Ontario. Some plants
that were once common on the prairies or in the
deciduous forests of northern United States are now
rare there because of widespread habitat modification
and the Ontario populations may represent the only
viable populations of these plants. From a study of
distribution maps alone it would not be apparent that
plants such as Cypripedium candidum, Iris lacustris,
Platanthera flava and Potamogeton hillii have become

rare throughout their entire range in the United States
and are included on the Smithsonian Institution’s list
of threatened species in the United States. Phyllitis
scolopendrium var. americanum is one of the few rare
plants whose main range is in Ontario. This North
American variety of a Eurasian fern is recognized as
endangered in the United States and may be threat-
ened with extinction throughout its entire range.

A detailed study of the distribution and ecology of
the plants on this list will reveal additional distri-
butional and ecological patterns. However, it is evident
even from this brief survey that there are in Ontario
unique habitats and assemblages of plants that must
be protected. Some of these important natural areas
are already under some form of protection, such as is
afforded the tundra habitats in Polar Bear Provincial
Park and the deciduous forests and other southern
habitats in the Point Pelee National Park. But there
are many plants and habitats that are not adequately
protected and positive action must be taken before
they are lost or irrevocably damaged.

H. Acknowledgements

We thank the following individuals who have con-
tributed to this list: P. L. Aird, Univ. of Toronto; D. M.
Britton, Univ. of Guelph; D. F. Brunton, Ontario
Ministry of Natural Resources; C. A. Campbell, Water-
loo, Ontario; P. M. Catling, Univ. of Toronto; W. J.
Crins, Ontario Ministry of Natural Resources; H. M.
Dale, Univ. of Guelph; W. G. Dore, Agriculture Canada;
J. M. Gillett, National Museum of Natural Sciences; E.
Haber, National Museum of Natural Sciences; L.
Kershaw, Univ. of Waterloo; J. D. LaFontaine, Agricul-
ture Canada; L. E. Lamb, Univ. of Waterloo; G. B.
McKeating, Ontario Ministry of Natural Resources; J.
McNeill, Agriculture Canada; R. J. Moore, Agriculture
Canada; J. K. Morton, Univ. of Waterloo; G. A.
Mulligan, Agriculture Canada; P. Pratt, Ontario Minis-
try of Natural Resources; A. A. Reznicek, Univ. of
Toronto; J. H. Soper, National Museum of Natural
Sciences and A. A. Wellwood, Wilfred Laurier
University.

We would like to particularly acknowledge L. Ker-
shaw and J. K. Morton for making their files on the
rare vascular plants of Canada freely available to us,
W. G. Dore and J. McNeill for allowing us to use their
unpublished manuscript on the grasses of Ontario and
J. H. Soper for critically reading the manuscript.

11

List of the Rare Vascular Plants of Ontario

Actinea acaulis var. glabra = Hymenoxys acaulis var.
glabra

Actinea herbacea = Hymenoxys acaulis var. glabra

Actinomeris alternifolia (L.)DC.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt
Map: Soper 1962 Ont
STATUS: Rare in Canada.

Adenocaulon bicolor Hook.
REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
maps
RANGE: sBC-swAlta, scOnt
ONTARIO: Bruce Pen.
Map: Fernald 1935, Given & Soper 1976 Ont

Adoxa moschatellina L.
REFERENCE: Kershaw 1976, Kershaw & Morton 1976,
Reznicek 1975-76 and maps
RANGE: Aka-NWT, BC-wOnt, local (Boivin 1967)
Map: Given & Soper 1976 Ont, Hultén 1971, Porsild
1966
STATUS: Endangered in Wisconsin (Read 1976).

Agalinis flava = Aureolaria flava

Agalinis gattingeri Small

(Gerardia gattingeri Small)

REFERENCE: Kershaw 1976 and map

RANGE: swOnt (Boivin 1967)

ONTARIO: L. St. Clair

Map: Pennell 1935

STATUS: Rare in Canada. Threatened in Wisconsin and
Michigan (Read 1976, Wagner 1976). Rare in Minne-
sota and Indiana (Morley 1972, Barnes 1975).

Agalinis skinneriana (Wood)Britt.

(Gerardia skinneriana Wood)

REFERENCE: Kershaw 1976 and map

RANGE: swOnt (Boivin 1967)

ONTARIO: L. St. Clair

Map: Pennell 1935

STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976). Rare in Indiana (Barnes 1975).

Agalinis tenuifolia (Vahl)Raf. var. parviflora
(Nutt.)Pennell
(Gerardia tenuifolia Vahl var. parviflora Nutt.)
REFERENCE: Beschel et al. 1970, Cruise 1969, Stewart &
James 1969 and map
RANGE: seMan-swPQ (Boivin 1967)
Map: Pennell 1935

Agastache nepetoides (L.)Ktze.
REFERENCE: Cruise 1969, Stewart & James 1969 and
map
RANGE: Ont-swPQ (Boivin 1967)
Map: Lint & Epling 1945
STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976). Rare in Minnesota (Morley 1972).

Agastache scrophulariaefolia (Willd.)Ktze.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
Map: Lint & Epling 1945
STATUS: Rare and possibly extirpated in Canada.

Agrimonia parviflora Ait.
REFERENCE: CAN, Kershaw 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Essex Co.

STATUS: Rare in Canada.

Agrimonia pubescens Wallr.
REFERENCE: Cruise 1969, Kershaw 1976 and map
RANGE: swOnt-swPQ (Boivin 1967)
Map: Skalicky 1973
STATUS: Rare in Canada.

Agropyron boreale (Turcz.) Drobov ssp. boreale
(A. latiglume auct.)
REFERENCE: CAN, Dore & McNeill 1976
RANGE: Aka-NWT, nMan-nOnt-nPQ, Lab
ONTARIO: Hudson Bay
Map: Hultén 1968, Raup 1947

Agropyron latiglume = A. boreale ssp. boreale

Agropyron dasystachyum var. psammophilum = A.
psammophilum

Agropyron psammophilum Gillett & Senn

(Agropyron dasystachyum (Hook.)Scribn. var.
psammophilum (Gillett & Senn)E. Voss)

REFERENCE: Maps

RANGE: Ont (Boivin 1967)

ONTARIO: Great Lakes

Map: Dore & McNeill 1976 Ont, Gillett & Senn 1961,
Given & Soper 1976 Ont

Status: Rare in Canada. Threatened in Wisconsin and
Michigan (Read 1976, Wagner 1976).

Aletris farinosa L.
REFERENCE: Cruise 1969, Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
Map: Soper 1962 Ont
STATUS: Rare in Canada.

Allium cernuum Roth
REFERENCE: Brunton 1974-75, Soper 1975-76
RANGE: BC-Sask, swOnt (Boivin 1967)

Allium stellatum Fraser
REFERENCE: Brunton 1974-75, Reznicek 1975-76, Soper
1975-76
RANGE: Sask-wOnt (Boivin 1967)

Alopecurus alpinus Sm.
REFERENCE: Maps
RANGE: Aka, BC-nOnt-PQ (Boivin 1967)
ONTARIO: Hudson Bay
Map: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964

12

Amelanchier amabilis = A. sanguinea var. grandiflora

Amelanchier sanguinea (Pursh)DC. var. grandiflora
(Wieg.)Rehder
(A. amabilis auct.)
REFERENCE: Catling 1976b and map
RANGE: sOnt-sPQ
Map: McKay 1973 Ont, Cinq-Mars 1971 PQ
Status: Rare in Canada.

Ammania coccinea Rottb.
REFERENCE: Campbell 1976, Kershaw 1976
RANGE: swBC, swOnt (Boivin 1967)
STATUS: Rare in Canada. Extirpated in Pennsylvania
(Wherry 1975).

Amorpha canescens Pursh
REFERENCE: Kershaw 1976
RANGE: sMan-wOnt (Boivin 1967)
Map: Wilbur 1964
STATUS: Rare in Michigan (Wagner 1976).

Andromeda polifolia L. ssp. polifolia
REFERENCE: Maps
RANGE: Aka-NWT, BC-nOnt-PQ (Boivin 1967)
ONTARIO: Hudson and James Bays

Map: Hultén 1968, Hultén 1971, Raup 1947, Soper &
Heimburger 1976 Ont

Andropogon virginicus L.
REFERENCE: Catling et al. 1977, Dore & McNeill 1976
RANGE: swOnt
ONTARIO: Norfolk Co.
Map: Griggs 1913
STATUS: Rare in Canada.

Anemonella thalictroides (L.)Spach.
(Thalictrum thalictroides (L.)Eames & Boivin)

REFERENCE: Kershaw 1976 and map
RANGE: sOnt

Map: Soper et al. 1963

STATUS: Rare in Canada.

Antennaria farwellii Greene

REFERENCE: FON 1969, Kershaw 1976, Kershaw & Mor-
ton 1976, Krotkov 1940

RANGE: scOnt (Fernald 1950)
ONTARIO: Bruce Pen.
STATUS: Rare in Canada.

Antennaria subviscosa Fern.
REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
map
RANGE: YT-NWT, nBC, nSask, nOnt, PQ (Boivin 1967)
ONTARIO: L. Superior
Map: Porsild 1966

Aplectrum hyemale (Muhl.)Nutt.

REFERENCE: Beschel et al. 1970, Kershaw 1976, Lafon-
taine & White 1974 and maps

RANGE: Sask, s&eOnt, swPQ

Map: Auclair 1972, Case 1964 Great Lakes, Luer 1975

STATUS: Rare in Canada. Extremely rare in western New
York (Clinton Herbarium 1974).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in Minnesota, Wisconsin, New York (McGaugh
& Genoways 1976) and Vermont (Vermont 1957,
1974).

Arabis alpina L.
REFERENCE: Maps
RANGE: NWT, Man-nOnt-Lab
ONTARIO: Hudson Bay
Map: Hopkins 1937 eCan, Hultén 1958, Porsild 1964

Arabis arenicola (Richards.)Gelert var. pubescens
(Wats. )Gelert
REFERENCE: Moir 1958 and maps
RANGE: Aka, NWT, nOnt-nPQ
ONTARIO: Hudson and James Bays
Map: Cody 1971, Hopkins 1937 cCan, Hultén 1968

Arabis canadensis L.
REFERENCE: Kershaw 1976
RANGE: sOnt-swPQ (Boivin 1967)
STATUS: Rare in Canada. Endangered in New Hampshire
(Hodgdon 1973).

Arabis drummondii Gray

REFERENCE: Reznicek 1975-76 and maps

RANGE: Aka-NWT, BC-Sask, ncOnt, sPQ-Lab, local
(Boivin 1967)

ONTARIO: L. Superior

Map: Hopkins 1937, Hultén 1968, Porsild 1966, Rollins
1941

STATUS: Rare in Indiana (Barnes 1975).

Arabis holboellii Hornem.
REFERENCE: Maps
RANGE: Aka-NWT, BC-Ont, PQ
Map: Given & Soper 1976 Ont, Hopkins 1937 eCan,
Hultén 1968, Raup 1947
STATUS: Rare in Minnesota (Morley 1972).

Arabis lyrata L. var. lyrata
REFERENCE: Beschel et al. 1970, Cruise 1969, FON 1969,
Krotkov 1940 and maps
RANGE: Ont
ONTARIO: Great Lakes
Map: Hopkins 1937, Hultén 1968
STATUS: Rare in Canada.

Arabis perstellata E.L.Braun var. shortii Fern.
REFERENCE: Kershaw 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Pt. Pelee
STATUS: Rare in Canada.

Arctagrostis latifolia (R.Br.)Griseb.
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, nBC-nOnt-nPQ, Lab
ONTARIO: Hudson Bay
Map: Dore & McNeill 1976 Ont, Hultén 1964, Hultén
1968, Porsild 1964

Arctophila fulva (Trin.)Anderss.
(Colpodium fulvum (Trin.)Griseb.)
REFERENCE: Maps
RANGE: Aka-NWT, Man-nOnt-PQ (Boivin 1967)
ONTARIO: Hudson Bay
Map: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964

Arctostaphylos alpina (L.)Spreng.
REFERENCE: Maps
RANGE: Aka-NWT, nBC, Man-nOnt-PQ, Nfld-Lab
ONTARIO: Hudson Bay
Map: Hultén 1968, Hultén 1971, Porsild 1964
STATUS: Endangered in New Hampshire (Hodgdon
1973).

Arctostaphylos rubra (Rehd. & Wilson)Fern.
REFERENCE: CAN, Moir 1958 and maps
RANGE: Aka-NWT, BC-Sask, Man-nOnt-PQ, Nfld-Lab
Map: Hultén 1968, Hultén 1971, Porsild 1964, Soper &
Heimburger 1976 Ont

Arenaria humifusa Wahl.
REFERENCE: Maps
RANGE: Aka-NWT, BC-neOnt-PQ, Nfld-Lab
ONTARIO: James Bay

MAP: Given & Soper 1976 Ont, Hultén 1958, Hultén
1968, Porsild 1964, Raymond 1950b

Arenaria macrophylla Hook.
REFERENCE: Maps
RANGE: NWT, BC, Sask, nOnt-nPQ, Lab, local (Boivin
1967)
Map: Fernald 1925, Given & Soper 1976 Ont

Arenaria rubella Wahl.
(Minuartia rubella (Wahl.)Graebn.)

REFERENCE: CAN, Moir 1958 and maps

RANGE: Aka-NWT, BC-Alta, nOnt-nPQ, Nfld-Lab
ONTARIO: Hudson and James Bays

Map: Hultén 1968, Meusel et al. 1965, Porsild 1964

Arisaema dracontium (L.)Schott

REFERENCE: Cruise 1969, IBP-CT 1974, Kershaw 1976,
Stewart & James 1969 and map

RANGE: swOnt-swPQ (Boivin 1967)

Map: Marie-Victorin 1931

STATUS: Rare in Canada. Endangered in New Hampshire
(Hodgdon 1973). Rare in Minnesota (Morley 1972).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976, Zander 1976).

13

Aristida basiramea Engelm.

REFERENCE: Catling et al. 1977, Reznicek 1975-76 and
map

RANGE: swOnt

ONTARIO: Norfolk Co. and Simcoe Co.

Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

STATUS: Rare in Canada.

Aristida dichotoma Michx.

REFERENCE: Catling et al. 1977, Kershaw 1976 and map

RANGE: swOnt (Boivin 1967)

ONTARIO: Port Colborne

Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

STATUS: Rare in Canada; possibly extirpated in Ontario
(Dore & McNeill 1976). Threatened in Michigan (Wag-
ner 1976).

Aristida longespica Poir.

REFERENCE: Catling et al. 1977, Reznicek 1975-76 and
map

RANGE: swOnt

ONTARIO: Kent Co.

Map: Dore & McNeill 1976 Ont

STATUS: Rare in Canada. Threatened in Michigan (Wag-
ner 1976).

Aristida necopina Shinners

REFERENCE: Catling et al. 1977, Reznicek 1975-76 and
map

RANGE: swOnt

ONTARIO: Norfolk Co. and Kent Co.

Map: Dore & McNeill 1976 Ont

STATUS: Rare in Canada; possibly alien (Dore & McNeill
1976). Threatened in Michigan (Wagner 1976).

Aristida purpurascens Poir.

REFERENCE: Catling et al. 1977, Dore 1975, Kershaw
1976 and map

RANGE: swOnt (Boivin 1967)

ONTARIO: Windsor

Mae: Dore & McNeill 1976 Ont

STATUS: Rare in Canada; possibly extirpated in Ontario
(Dore & McNeill 1976).

Armeria maritima (Mill.)Willd. ssp. labradorica
(Wall.)Lawr.
REFERENCE: Moir 1958 and maps
RANGE: NWT, nOnt-nPQ, Nfld-Lab
ONTARIO: Hudson and James Bays
Map: Hultén 1958, Lawrence 1947, Porsild 1964

Arnica alpina (L.)Olin ssp. angustifolia (Vahl)Maquire
REFERENCE: Moir 1958, Reznicek 1975-76 and maps
RANGE: Aka-NWT, nBC-nOnt-nPQ (Boivin 1967)
ONTARIO: Hudson Bay
Map: Hultén 1958, Hultén 1968, Maguire 1943, Porsild

1964

Arnica chionopappa = A. lonchophylla ssp. chionopappa

14

Arnica lonchophylla Greene ssp. chionopappa
(Fern.)Maquire
(A. chionopappa Fern.)
REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
map
RANGE: wOnt-sPQ, NS, Nfld (Roland & Smith 1963-69)
Map: Hultén 1968, Maguire 1943

Arnica lonchophylla Greene ssp. lonchophylla
REFERENCE: Maps
RANGE: Aka-NWT, BC-nwOnt
Map: Given & Soper 1976 Ont, Hultén 1968, Maguire
1943

Arnica whitneyi Fern.
REFERENCE: Reznicek 1975-76 and maps
RANGE: Ont
ONTARIO: Great Lakes
Map: Given & Soper 1976 Ont, Hultén 1968
STATUS: Rare in Canada. Endangered in Michigan (Wag-
ner 1976).

Artemisia tilesii Ledeb. ssp. elatior (T.& G.)Hult.
REFERENCE: Maps
RANGE: Aka-NWT, BC-Alta, Man, neOnt
ONTARIO: James Bay
Map: Cody 1971, Hultén 1968, Porsild 1964

Asclepias exaltata L.
REFERENCE: CAN, Kershaw 1976 and map
RANGE: sOnt (Boivin 1967)
Map: Woodson 1954
STATUS: Rare in Canada.

Asclepias hirtella (Pennell)Woodson
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: Essex Co.
Map: Woodson 1954
STATUS: Rare in Canada. Threatened in Michigan (Wag-
ner 1976).

Asclepias lanuginosa Nutt.

(A. nuttalliana auct.)

REFERENCE: Boivin 1967-72, Kershaw 1976, Reznicek
1975-76

RANGE: scMan-swOnt

Map: Woodson 1954

STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976).

Asclepias nuttalliana = A. lanuginosa

Asclepias ovalifolia Dene.
REFERENCE: Reznicek 1975-76
RANGE: Alta-wOnt (Boivin 1967)
Map: Woodson 1954
STATUS: Threatened in Michigan (Wagner 1976).

Asclepias purpurascens L.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
Map: Woodson 1954
STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976). Rare in Minnesota (Morley 1972).

Asclepias quadrifolia Jacq.
REFERENCE: Beschel et al. 1970, Kershaw 1976 and map
RANGE: sOnt (Boivin 1967)
Map: Woodson 1954
STATUS: Rare in Canada. Endangered in New Hampshire
(Hodgdon 1973).

Asclepias sullivantii Engelm.

REFERENCE: Kershaw 1976 and map

RANGE: swOnt (Boivin 1967)

ONTARIO: Essex Co.

Map: Woodson 1954

STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976). Threatened in Michigan (Wagner 1976).
Rare in Minnesota (Morley 1972).

Asclepias verticillata L.
REFERENCE: Map
RANGE: seSask-sMan, swOnt (Boivin 1967)
Map: Woodson 1954
STATUS: Extremely rare in western New York (Clinton
Herbarium 1974).

Asclepias viridiflora Raf.
REFERENCE: Map
RANGE: sBC-sMan, sOnt (Boivin 1967, Boivin 1967-72)
Map: Woodson 1954
STATUS: Rare in Canada.

Asimina triloba (L.)Dunal
REFERENCE: Cruise 1969, IBP-CT 1974, Kershaw 1976,
Stewart & James 1969 and maps
RANGE: sOnt
Map: Bowden & Miller 1951 Ont-nUS, Fox & Soper 1952
Ont, Hosie 1969 Can, Soper & Heimburger 1976 Ont
STATUS: Rare in Canada.

Asplenium cryptolepis = A. ruta-muraria ssp.
cryptolepis

Asplenium platyneuron (L.)Oakes
REFERENCE: Beschel et al. 1970, Britton 1976, Brunton
1974-75, Catling 1974, FON 1969, Kershaw 1976,
Lafontaine & White 1974
RANGE: Ont-sPQ (Boivin 1967)
STATUS: Rare in Canada.

Asplenium ruta-muraria L. ssp. cryptolepis

(Fern.)Clausen & Wahl

REFERENCE: Britton 1976, FON 1969, Kershaw 1976,
Krotkov 1940, Lafontaine 1974, Soper 1963 and maps

RANGE: scOnt

ONTARIO: Bruce Pen. and Manitoulin Is.

Map: Fernald 1935, Given & Soper 1976 Ont, Hultén
1964

STATUS: Rare in Canada. Extirpated in Illinois (Paulson
& Schwegman 1976). Threatened in Michigan (Wag-
ner 1976). Rare in Indiana (Barnes 1975).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976) and Vermont (Vermont 1957, 1974)

Asplenium viride Huds.

REFERENCE: Britton 1976, Catling 1974, FON 1969, IBP-
CT 1974, Krotkov 1940 and maps

RANGE: Aka-NWT, BC-Alta, Ont-Nfld

Map: Hultén 1964, Soper 1963 Ont

STATUS: Possibly extirpated in Wisconsin (Read 1976).
Rare in Michigan (Wagner 1976).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976) and Vermont (Vermont 1957, 1974)

Aster acuminatus Michx.
REFERENCE: CAN, Reznicek 1975-76 and map
RANGE: sOnt-Nfld (Boivin 1967)
Map: Dansereau 1952, Pike 1970

Aster divaricatus L.
REFERENCE: Beschel et al. 1970, Cruise 1969, Kershaw
1976
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada.

Aster dumosus L.
REFERENCE: Beschel et al. 1970
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada.

Aster lowrieanus Porter

REFERENCE: Beschel et al. 1970, Cruise 1969, Stewart &
James 1969

RANGE: swOnt-swPQ (Boivin 1967)
STATUS: Rare in Canada.

Aster lutescens (Lindl.)T.& G.
(A. ptarmicoides(Nees)T.& G. var. lutescens
(Lindl.)Gray)

REFERENCE: FON 1969, Krotkov 1940
RANGE: Sask-scOnt (Fernald 1950)
ONTARIO: Bruce Pen.

Aster ontarionis Wieg.
(A. tradescantii L. var. thyrsoides (Gray)Boivin)
REFERENCE: Beschel et al. 1970, Lafontaine & White
1974
RANGE: Ont-PQ (Boivin 1967)

15

Aster pilosus Willd. var. demotus Blake
REFERENCE: CAN, DAO
RANGE: sOnt (Boivin 1967)
ONTARIO: Toronto Is.
STATUS: Rare and possibly extirpated in Canada. Rare in
Minnesota (Morley 1972).

Aster prenanthoides Muhl.
REFERENCE: Cruise 1969, Kershaw 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Elgin Co.
Map: Shull 1904
STATUS: Rare in Canada.

Aster ptarmicoides var. lutescens = A. lutescens

Aster sericeus Vent.
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: sMan-wOnt (Boivin 1967)
Map: Bare & McGregor 1970 cUS
STATUS: Rare in Canada. Threatened in Michigan (Wag-
ner 1976). Rare in Indiana (Barnes 1975).

Aster shortii Lind.
REFERENCE: Kershaw 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Pt. Pelee
Map: Avers 1953
STATUS: Rare in Canada. Rare in Minnesota (Morley
1972).

Aster subulatus Michx.
REFERENCE: DAO, Kershaw 1976
RANGE: swOnt, NB (Boivin 1967)
ONTARIO: Windsor
STATUS: Rare in Canada.

Aster tradescantii var. thyrsoides = A. ontarionis

Aster undulatus L.
REFERENCE: Cruise 1969, Soper 1975-76 and map
RANGE: sOnt, swNS (Boivin 1967)
Map: Avers 1953
STATUS: Rare in Canada. Rare in Minnesota (Morley
1972).

Aster vimineus Lam.
REFERENCE: Beschel et al. 1970, Kershaw 1976, Stewart
& James 1969
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada.

Astragalus adsurgens Pall. var. robustior Hook.
REFERENCE: Maps
RANGE: Aka-NWT, BC-Man, ncOnt
ONTARIO: L. Superior
Map: Barneby 1964, Hultén 1968

Astragalus agrestis Dougl.
REFERENCE: Maps
RANGE: YT-NWT, BC-Man, neOnt
ONTARIO: James Bay
Map: Barneby 1964, Hultén 1968

16

Astragalus americanus (Hook.)M.E.Jones
REFERENCE: Maps
RANGE: Aka-NWT, BC-nOnt
ONTARIO: Hudson Bay
Map: Barneby 1964, Hultén 1968

Astragalus eucosmus Robins.
REFERENCE: Reznicek 1975-76 and maps
RANGE: Aka-YT, BC-Sask, Man, nOnt
ONTARIO: Hudson and James Bays
Map: Barneby 1964, Hultén 1968, Porsild 1964

Astragalus neglectus (T.& G.)Sheldon
REFERENCE: Beschel et al. 1970, Cruise 1969 and map
RANGE: seMan-Ont (Boivin 1967-72)
Map: Barneby 1964
Status: Rare in Canada. Endangered in Wisconsin
(Read 1976).

Athyrium pycnocarpon (Spreng.)Tid.

REFERENCE: Beschel et al. 1970, Britton 1976, Brunton
1974-75, Catling 1974, FON 1969

RANGE: Ont-swPQ (Boivin 1967)

Map: Raymond 1950b eCan

STATUS: Endangered in New Hampshire (Hodgdon
1973). Threatened in Wisconsin (Read 1976). Rare in
Minnesota (Morley 1972).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Aureolaria flava (L.)Farw.
(Agalinis flava (L.)Boivin)
REFERENCE: Cruise 1969, Kershaw 1976 and maps
RANGE: swOnt
Map: Pennell 1935, Soper 1962 Ont
STATUS: Rare in Canada.

Aureolaria pedicularia (L.)Raf.
REFERENCE: Cruise 1969, Kershaw 1976 and maps
RANGE: swOnt
Map: Pennell 1935, Soper 1962 Ont
STATUS: Rare in Canada. Rare in Minnesota and Indiana
(Morley 1972, Barnes 1975).

Aureolaria virginica (L.)Pennell
REFERENCE: Cruise 1969, Kershaw 1976 and maps
RANGE: swOnt
ONTARIO: Niagara region and Waterloo Co.
Map: Pennell 1935, Soper 1962 Ont
STATUS: Rare in Canada.

Azolla caroliniana Willd.

REFERENCE: Kershaw 1976, Soper 1975-76

RANGE: swOnt

ONTARIO: Hamilton

STATUS: Rare and possibly extirpated in Canada (Soper
1949). Rare in Indiana (Barnes 1975).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Baptisia tinctoria (L.)R.Br.
REFERENCE: Kershaw 1976 and maps
RANGE: swOnt
Map: Larisey 1940, Soper 1962 Ont
STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976). Rare in Minnesota and Indiana (Morley
1972, Barnes 1975).

Bartonia paniculata Michx. ssp. paniculata
REFERENCE: Maps
RANGE: sOnt
ONTARIO: Muskoka Dist.
Map: Gillett 1959, Reznicek & Whiting 1975 Ont
STATUS: Rare in Canada.

Bartonia virginica L.
REFERENCE: Kershaw 1976, Wellwood 1975 and maps
RANGE: sOnt, swPQ, NS
Map: Gillett 1959, Gillett 1963, Reznicek & Whiting 1975
Ont, Soper 1960 Ont
STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976). Rare in Minnesota (Morley 1972).

Bartsia alpina L.
REFERENCE: Moir 1958, Reznicek 1975-76 and map
RANGE: eNWT, nMan-nOnt-PQ, Nfld-Lab
Map: Hultén 1958, Porsild 1964

Berula erecta (Huds.)Cov. var. incisa (Torr.)Cronq.
REFERENCE: Kershaw 1976
RANGE: sBC, swOnt (Boivin 1967)
ONTARIO: Port Colborne
STATUS: Rare in Canada; possibly extirpated in Ontario
(Scoggan 1976).

Betula lenta L.
REFERENCE: Kershaw 1976 and maps
RANGE: swOnt
ONTARIO: Port Dalhousie
Map: Fox & Soper 1954 Ont, Hosie 1969 Can, Little
1971, Soper 1960 Ont
STATUS: Rare in Canada.

Bidens coronata (L.)Britt.
REFERENCE: Cruise 1969, Kershaw 1976
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada.

Bidens discoidea (T.& G.)Britt.
REFERENCE: Beschel et al. 1970
RANGE: sOnt-PQ, NS (Boivin 1967)
STATUS: Rare in Canada. Rare in Minnesota (Morley
1972).

Blephilia ciliata (L.)Benth.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: Pelee |. and L. St. Clair
Map: Soper 1960 Ont
STATUS: Rare in Canada.

Blephilia hirsuta (Pursh)Benth.
REFERENCE: Map
RANGE: swOnt-swPQ (Boivin 1967)
ONTARIO: Lambton Co.
Map: Soper 1960 Ont
STATUS: Extremely rare in western New York (Clinton
Herbarium 1974).

Botrychium lanceolatum (Gmel.)Rupr. var.

angustisegmentum Pease & Moore

REFERENCE: Beschel et al. 1970, Britton 1976, Brunton
1974-75 and maps

RANGE: Ont-Nfld

Map: Clausen 1938, Hultén 1958, Hultén 1968

STATUS: Threatened in Wisconsin (Read 1976). Ex-
tremely rare in western New York (Clinton Herbarium
1974). Rare in Minnesota (Morley 1972).

Bouteloua curtipendula (Michx.)Torr.
REFERENCE: Reznicek 1975-76 and map
RANGE: seSask-sOnt (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Gould & Kapadia 1962
STATUS: Threatened in Michigan (Wagner 1976).

Bromus pubescens Muhl.
(B. purgans auct.)
REFERENCE: Beschel et al. 1970, Dore 1959, Stewart &
James 1969 and maps
RANGE: NWT, Alta-sOnt-NB (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Wagnon 1952

Bromus pumpellianus Scribn.
REFERENCE: Maps
RANGE: Aka-NWT, BC-Man, Ont
Map: Dore & McNeill 1976 Ont, Elliot 1949, Guire & Voss
1963 Great Lakes

Bromus purgans = B. pubescens

Buchnera americana L.
REFERENCE: Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)
ONTARIO: Lambton Co.
Map: Pennell 1935, Soper 1962 Ont
STATUS: Rare in Canada. Extirpated in Michigan (Wag-
ner 1976). Rare in Indiana (Barnes 1975).

Bulbostylis capillaris (L.)C.B.Clarke
REFERENCE: Beschel et al. 1970, Brunton 1974-75,
Cruise 1969, IBP-CT 1974, Reznicek 1975-76 and
map
RANGE: Ont-swPQ (Boivin 1967)
Map: Kral 1971 US, Soper 1960 Ont
STATUS: Rare in Canada.

Cacalia tuberosa Nutt.

REFERENCE: FON 1969, Kershaw 1976, Krotkov 1940 and
map

RANGE: swOnt (Boivin 1967)

ONTARIO: Huron Co. and Bruce Co.

Map: Soper 1977 Ont

STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976).

17

Calamagrostis lacustris (Kearn.)Nash
REFERENCE: Dore & McNeill 1976, Reznicek 1975-76,
Soper 1975-76 and map
RANGE: nOnt-wPQ, swNfld (Fernald 1950)
Map: Dutilly & Lepage 1963 Ont-PQ
STATUS: Threatened in Michigan (Wagner 1976).

Calamagrostis purpurascens R.Br.
REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
maps
RANGE: Aka-NWT, BC-ncOnt-PQ, Nfld (Boivin 1967)
ONTARIO: L. Superior
Map: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964, Raup 1947

Calamovilfa longifolia (Hook.)Scribn. var. longifolia
REFERENCE: Dore & McNeill 1976, FON 1969, Krotkov
1940 and maps
RANGE: sBC-Ont (Boivin 1967)
Map: Thieret 1960, Thieret 1966
STATUS: Threatened in Wisconsin (Read 1976). Rare in
Indiana (Barnes 1975).

Calamovilfa longifolia (Hook.)Scribn. var. magna

Scribn.& Merr.

REFERENCE: Maps

RANGE: sOnt (Boivin 1967)

ONTARIO: L. Huron

Map: Dore & McNeill 1976 Ont, Thieret 1960, Thieret
1966

STATUS: Rare in Canada.

Caltha natans Pall.
REFERENCE: Reznicek 1975-76, Senn 1941 and map
RANGE: Aka, NWT, BC-Man, wOnt (Boivin 1967)
Map: Hultén 1968

Camassia scilloides (Raf.)Cory

REFERENCE: CAN, Kershaw 1976 and maps

RANGE: swOnt (Boivin 1967)

ONTARIO: Essex Co.

Map: Gould 1942, Soper 1960 Ont, Wood 1970

STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976). Threatened in Michigan and Pennsyl-
vania (Wagner 1976, Wherry 1975).

Campanula americana L.
REFERENCE: Beschel et al. 1970, Cruise 1969, Kershaw
1976, Stewart & James 1969 and map
RANGE: sOnt (Boivin 1967)
Map: Fernald 1941
STATUS: Rare in Canada.

Campsis radicans (L.)Seem.
REFERENCE: Beschel et al. 1970, Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)
ONTARIO: Essex Co. and Kent Co.
Map: Soper 1956 Ont, Soper & Heimburger 1976 Ont
STATUS: Rare in Canada; extirpated in Ontario but un-
der cultivation (Soper 1956).

18

Cardamine douglasii Britt.
REFERENCE: Kershaw 1976
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada.

Carex amblyorhyncha Krecz.
REFERENCE: Maps
RANGE: Aka-NWT, nMan-nOnt-nPQ
ONTARIO: Hudson and James Bays
Map: Dutilly et al. 1958, Hultén 1964, Hultén 1968,
Porsild 1964

Carex amphibola var. turgida = C. grisea

Carex atrata L.
REFERENCE: Maps
RANGE: Aka, BC-Alta, nOnt, PQ
Map: Given & Soper 1976 Ont, Hultén 1958, Raymond
1950a eCan

Carex atrofusca Schkuhr
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, nOnt-PQ
ONTARIO: Hudson and James Bays
Map: Hultén 1964, Porsild 1964

Carex careyana Torr.
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: sOnt (Fernald 1950)
Status: Rare in Canada. Endangered in Wisconsin
(Read 1976). Threatened in Pennsylvania (Wherry
1975).

Carex conoidea Schkuhr

(C. katahdinensis Fern.)

REFERENCE: Beschel et al. 1970, Kershaw 1976, Reznicek
1975-76 and map

RANGE: Ont-NB, NS, Nfld (Boivin 1967)

Map: Raymond 1951 eCan

STATUS: Rare in Minnesota and Indiana (Morley 1972,
Barnes 1975).

Carex davisii Schwein.& Torr.
REFERENCE: Campbell & Reznicek 1976, Kershaw 1976
RANGE: swOnt-PQ
ONTARIO: Pelee Is.
STATUS: Rare in Canada. Rare in Minnesota and Michi-
gan (Morley 1972, Wagner 1976).

Carex folliculata L.
REFERENCE: Beschel et al. 1970
RANGE: Ont-Nfld (Boivin 1967)
STATUS: Threatened in Wisconsin (Read 1976). Rare in
midwestern United States (Barnes 1975, Tans & Read
1975).

Carex formosa Dewey
REFERENCE: Beschel et al. 1970, Kershaw 1976
RANGE: sOnt-swPQ (Boivin 1967)
STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976). Rare in Minnesota (Morley 1972).

Carex frankii Kunth
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: sOnt
STATUS: Rare in Canada. Rare in Michigan (Wagner
1976).

Carex gravida Bailey
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: seSask, swOnt (Boivin 1967)
STATUS: Rare in Canada. Rare in Michigan and Indiana
(Wagner 1976, Barnes 1975).

Carex grisea Wahl.
(C. amphibola Steud. var. turgida Fern.)
REFERENCE: Brunton 1974-75, Cruise 1969
RANGE: sOnt-NB (Boivin 1967)

Carex haydenii Dewey
REFERENCE: Beschel et al. 1970, Brunton 1974-75,
Reznicek 1975-76
RANGE: Ont-NB (Boivin 1967)
STATUS: Rare in Michigan (Wagner 1976).

Carex heleonastes L.f.
REFERENCE: Kershaw 1976, Kershaw & Morton 1976,
Reznicek 1975-76 and maps
RANGE: Aka-NWT, Alta-Man, nOnt-nPQ (Boivin 1967)
ONTARIO: Disjunct James Bay and L. Superior
Map: Hultén 1964, Hultén 1968

Carex hirsutella Mack.
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: Ont-swPQ (Boivin 1967)
STATUS: Rare in Canada.

Carex hookerana Dewey
REFERENCE: Reznicek 1975-76 and map
RANGE: Alta-wOnt (Boivin 1967)
Map: Given & Soper 1976 Ont

Carex jamesii Schwein.
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada.

Carex katahdinensis = C. conoidea

Carex laevivaginata (Kukenth.)Mack.
REFERENCE: CAN, Kershaw 1976
RANGE: sOnt (Scoggan 1976)
ONTARIO: Grey Co. and Ontario Co.
Status: Rare in Canada. Endangered in Wisconsin
(Read 1976). Rare in Minnesota (Morley 1972).

Carex laxiculmis Schwein.
REFERENCE: CAN, Kershaw 1976
RANGE: sOnt-PQ (Boivin 1967)
STATUS: Rare in Canada.

Carex laxiflora Lam. var. gracillima (Boott)Robins.&
Fern.
REFERENCE: Reznicek 1975-76
RANGE: sOnt-swPQ (Boivin 1967)

Carex leavenworthii Dewey
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: swOnt (Boivin 1967)
ONTARIO: Pt. Pelee
STATUS: Rare in Canada.

Carex lupuliformis Sartw.
REFERENCE: Kershaw 1976, Reznicek 1975-76 and map
RANGE: swOnt, swPQ (Boivin 1967)
ONTARIO: Galt
Map: Reznicek & Ball 1974
STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976).

Carex miliaris Michx.
(C. saxatilis L. var. miliaris (Michx.)Bailey)
REFERENCE: Moir 1958 and maps
RANGE: nMan-nOnt-PQ, Lab
Map: Hultén 1964, Porsild 1964

Carex muskingumensis Schwein.
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada.

Carex nigra (L.)Reichard
REFERENCE: Map
RANGE: neOnt-PQ, NB-Lab
ONTARIO: James Bay
Map: Hultén 1958

Carex novae-angliae Schwein.
REFERENCE: Reznicek 1975-76
RANGE: Ont-NS, Nfld (Boivin 1967)

Carex oligocarpa Schkuhr
REFERENCE: Beschel et al. 1970, Kershaw 1976, Reznicek
1975-76
RANGE: sOnt-swPQ (Boivin 1967)
STATUS: Rare in Canada. Rare in Michigan (Wagner
1976).

Carex prasina Wahl.
REFERENCE: Beschel et al. 1970, Reznicek 1975-76
RANGE: sOnt-swPQ (Boivin 1967)
Map: Raymond 1950b eCan
STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976).

Carex richardsonii R.Br.
REFERENCE: Reznicek 1975-76 and map
RANGE: BC-PQ (Boivin 1967)
Map: Raup 1930
STATUS: Threatened in Wisconsin (Read 1976). Rare in
Michigan and Indiana (Wagner 1976, Barnes 1975).

Carex rossii Boott
REFERENCE: Maps
RANGE: Aka-NWT, BC-Man, ncOnt
ONTARIO: Thunder Bay Dist.
Map: Given & Soper 1976 Ont, Hultén 1968, Raup 1930
STATUS: Rare in Minnesota and Michigan (Morley 1972,
Wagner 1976).

19

Carex saxatilis var. miliaris = C. miliaris

Carex schweinitzii Dewey
REFERENCE: Kershaw 1976, Scoggan 1976
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976).

Carex shortiana Dewey
REFERENCE: Kershaw 1976, Reznicek 1975-76 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: River Canard
Map: Meusel et al. 1965
STATUS: Rare in Canada.

Carex squarrosa L.
(C. typhina Michx.)
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: sOnt-swPQ (Boivin 1967)
Map: Raymond 1950b PQ
STATUS: Rare in Michigan (Wagner 1976).

Carex supina Willd. ssp. spaniocarpa (Steud.)Hult.
REFERENCE: Kershaw & Morton 1976 and maps
RANGE: Aka-NWT, BC-Alta, Man, ncOnt, PQ
ONTARIO: L. Superior
Map: Given & Soper 1976 Ont, Hultén 1964, Porsild
1964

Carex swanii (Fern.)Mack.
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: Ont-PQ, NS
Map: Raymond 1951 eCan
STATUS: Rare in Canada. Possibly extirpated in Wiscon-
sin (Read 1976).

Carex tetanica Schkuhr var. woodii (Dewey)Wood
(C. woodii Dewey)
REFERENCE: Beschel et al. 1970, Kershaw 1976
RANGE: Man-Ont (Boivin 1967)
STATUS: Rare in Canada. Rare in Indiana (Barnes 1975).

Carex torta Boott
REFERENCE: Reznicek 1975-76
RANGE: Ont-NB, NS (Boivin 1967)

Carex trichocarpa Muhl. ,

REFERENCE: Beschel et al. 1970, Kershaw 1976, Reznicek
1975-76

RANGE: swOnt-swPQ (Boivin 1967)

Map: Core 1968

Status: Rare in Canada. Rare in Minnesota, Michigan
and Indiana (Morley 1972, Wagner 1976, Barnes
1975).

Carex typhina = C. squarrosa
Carex virescens Muhl.

REFERENCE: Reznicek 1975-76
RANGE: sOnt-swPQ, NS (Boivin 1967)

20

Carex willdenowii Schkuhr
REFERENCE: Kershaw 1976
RANGE: sOnt (Boivin 1967)
Status: Rare in Canada.

Carex woodii = C. tetanica var. woodii

Carya glabra (Mill.)Sweet
REFERENCE: Kershaw 1976, Lafontaine 1974 and maps
RANGE: swOnt
Map: Fox & Soper 1954 Ont, Hosie 1969 Can, Little 1971
Status: Rare in Canada.

Carya laciniosa (Michx.)Loud.

REFERENCE: IBP-CT 1974, Kershaw 1976, Lafontaine
1974 and maps

RANGE: swOnt

Map: Fox & Soper 1954 Ont, Hosie 1969 Can, Little
1971, Soper 1960 Ont

STATUS: Rare in Canada. Rare in Michigan (Wagner
1976).

Cassia hebecarpa Fern.
(C. marilandica auct.)
REFERENCE: Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)
MAP: Soper 1956 Ont, Soper 1960 Ont
STATUS: Rare in Canada. Extremely rare in western New
York (Clinton Herbarium 1974).

Cassia marilandica = C. hebecarpa

Castanea dentata (Marsh.)Borkh.

REFERENCE: Cruise 1969, IBP-CT 1974, Kershaw 1976,
Stewart & James 1969 and maps

RANGE: swOnt (Boivin 1967)

Map: Baxter 1930, Fox & Soper 1953 Ont, Hosie 1969
Can, Soper 1960 Ont

STATUS: Endangered in Michigan (Wagner 1976).

PROTECTION: Protected by law in Indiana (McGaugh &
Genoways 1976).

Castilleja raupii Pennell
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, BC-nOnt, PQ (Boivin 1967)
Map: Hultén 1968, Pennell 1934

Catabrosa aquatica (L.)Beauv.
REFERENCE: Map
RANGE: NWT, BC-nOnt-PEl, Lab (Boivin 1967)
ONTARIO: Hudson and James Bays
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

Celtis tenuifolia Nutt.

REFERENCE: Kershaw 1976 and maps

RANGE: swOnt (Boivin 1967)

ONTARIO: Lambton Co.

Map: Fox & Soper 1953 Ont, Hosie 1969 Can, Soper &
Heimburger 1976 Ont

STATUS: Rare in Canada. Rare in Michigan (Wagner
1976).

Cenchrus longispinus (Hackel)Fern.
(C. pauciflorus Benth.)
REFERENCE: Stewart & James 1969 and maps
RANGE: sOnt (Boivin 1967)
Map: DeLisle 1963, Dore & McNeill 1976 Ont, Soper
1962 Ont
STATUS: Rare in Canada.

Cenchrus pauciflorus = C. longispinus

Cerastium alpinum L.
REFERENCE: Moir 1958 and maps
RANGE: NWT, Man-nOnt-nPQ, Nfld-Lab
ONTARIO: Hudson and James Bays
Map: Hultén 1956, Hultén 1958, Meusel et al. 1965,
Porsild 1964

Cerastium beeringianum C.& S.
REFERENCE: Kershaw & Morton 1976 and maps
RANGE: Aka-NWT, BC-Alta, ncOnt, PQ, Nfld-Lab
ONTARIO: L. Superior
Map: Given & Soper 1976 Ont, Hultén 1956, Hulten
1968, Porsild 1964, Raup 1947

Cercis canadensis L.

REFERENCE: IBP-CT 1974, Kershaw 1976 and maps

RANGE: swOnt

ONTARIO: Pelee Is.

Map: Fox & Soper 1953 Ont, Hopkins 1942, Hosie 1969
Can, Soper 1956 Ont

STATUS: Rare in Canada; extirpated in Ontario but un-
der cultivation (Dore 1975, Soper 1956).

Chaerophyllum procumbens (L.)Crantz.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: Essex Co.
Map: Soper 1962 Ont
STATUS: Rare in Canada; possibily extirpated in Ontario
(Soper 1962). Threatened in Wisconsin (Read 1976).

Chamaelirium luteum (L.)Gray
REFERENCE: Cruise 1969, Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)
Map: Soper 1962 Ont, Segelken 1929
STATUS: Rare in Canada.

Chenopodium foggii Wahl
REFERENCE: Gaiser & Moore 1966, Kershaw 1976
RANGE: sOnt-sPQ (Wahl 1954)
STATUS: Rare in Canada.

Chimaphila maculata (L.)Pursh

REFERENCE: Catling 1974, Cruise 1969, IBP-CT 1974,
Kershaw. 1976 and maps

RANGE: sOnt (Boivin 1967) :

Map: Segelken 1929, Soper 1960 Ont, Soper & Heim-
burger 1976 Ont, Zander 1976 Lake Erie

STATUS: Rare in Canada. Endangered in New Hampshire
(Hodgdon 1973). Occurs in New England as disjunct
populations of few individuals (Hodgdon & Eastman
1973). Rare in Michigan (Wagner 1976).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976, Zander 1976).

Chrysanthemum arcticum L. ssp. polare Hult.
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, nMan-nOnt-nPQ
ONTARIO: Hudson and James Bays
Map: Hultén 1968, Hultén 1971

Chrysanthemum bipinnatum ssp. huronense =
Tanacetum huronense

Cimicifuga racemosa (L.)Nutt.
REFERENCE: Cruise 1969, Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)
Map: Lloyd & Lloyd 1931, Soper 1962 Ont
STATUS: Rare in Canada.

Cinna arundinacea L.
REFERENCE: Beschel et al. 1970, Cruise 1969, Dore 1959
and map
RANGE: sOnt-swPQ (Boivin 1967)
Map: Dore & McNeill 1976 Ont
STATUS: Rare in Canada.

Cirsium drummondii T.& G.
REFERENCE: Map
RANGE: NWT, BC-Man, nOnt (Boivin 1967)
Map: Moore & Frankton 1964, Moore & Frankton 1974
Can

Cirsium pitcheri (Torr.)T.& G.

REFERENCE: FON 1969, Kershaw 1976, Kershaw & Mor-
ton 1976, Krotkov 1940 and maps

RANGE: Ont

ONTARIO: Great Lakes

Map: Given & Soper 1976 Ont, Guire & Voss 1963, John-
son & Iltis 1963, Moore & Frankton 1974 Can, Soper
1977 Ont

STATUS: Rare in Canada. Endangered in Illinois (Paulson
& Schwegman 1976). Threatened in Wisconsin and
Michigan (Read 1976, Wagner 1976). Rare in Indiana
(Barnes 1975).

Cirsium pumilum (Nutt.)Spreng. ssp. hillii (Canby)Moore

& Frankton

REFERENCE: FON 1969, Kershaw 1976, Kershaw & Mor-
ton 1976, Krotkov 1940 and map

RANGE: Ont

ONTARIO: Great Lakes

Map: Moore & Frankton 1963, Moore & Frankton 1974
Can, Soper 1977 Ont

STATUS: Rare in Canada. Threatened in Wisconsin and
Michigan (Read 1976, Wagner 1976).

Collinsia parviflora Lindl.
REFERENCE: Kershaw 1976, Kershaw & Morton 1976.
Reznicek 1975-76 and maps
RANGE: YT, BC-Sask, Man, Ont (Boivin 1967)
ONTARIO: Great Lakes
Map: Given & Soper 1976 Ont, Hultén 1968

21

Collinsia verna Nutt.

REFERENCE: Kershaw 1976, Stewart & James 1969 and
map

RANGE: swOnt (Boivin 1967)

Map: Pennell 1935

Status: Rare in Canada. Possibly extirpated in Wiscon-
sin (Read 1976). Threatened in Michigan (Wagner
1976). Extremely rare in western New York (Clinton
Herbarium 1974).

Collinsonia canadensis L.
REFERENCE: Cruise 1969, Kershaw 1976, Stewart &
James 1969 and map
RANGE: swOnt (Boivin 1967)
Map: Soper 1962 Ont
Status: Rare in Canada. Possibly extirpated in Wiscon-
sin (Read 1976).

Collomia linearis Nutt.
REFERENCE: Reznicek 1975-76 and maps
RANGE: Aka-NWT, BC-Man, Ont, PQ, NS (Boivin 1967)
Map: Hultén 1968, Wherry 1936

Colpodium fulvum = Arctophila fulva

Conobea multifida (Michx.)Benth.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: Pelee Is.

Map: Pennell 1935, Soper 1962 Ont
STATUS: Rare in Canada.

Conopholis americana (L.)Wallr.
REFERENCE: Beschel et al. 1970, Boivin 1967-72, Cruise
1969, FON 1969, IBP-CT 1974 and map
RANGE: Man-PQ, NS (Boivin 1967)
Map: Haynes 1971
STATUS: Rare in Canada.

Corallorhiza odontorhiza (Willd.)Nutt.

REFERENCE: Catling & Whiting 1976, Cruise 1969, Ker-
shaw 1976 and maps

RANGE: swOnt (Boivin 1967)

Map: Case 1964 Great Lakes, Luer 1975

STATUS: Rare in Canada; endangered in Ontario (Catling
& Whiting 1976). Threatened in Wisconsin (Read
1976). Rare in Minnesota (Morley 1972).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in Minnesota, Wisconsin, New York (McGaugh
& Genoways 1976) and Vermont (Vermont 1957,
1974).

Coreopsis lanceolata L.
REFERENCE: Catling et al. 1975
RANGE: BC, Ont (Boivin 1967)
ONTARIO: Great Lakes

22

Coreopsis tripteris L.
REFERENCE: Catling 1976b, Kershaw 1976, Scoggan 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Essex Co.
Status: Rare in Canada. Threatened in Wisconsin
(Read 1976). Rare in Minnesota (Morley 1972).

Corispermum hyssopifolium L.
REFERENCE: CAN, Cruise 1969
RANGE: NWT, BC-Ont-PQ (Boivin 1967)
ONTARIO: Great Lakes
STATUS: Rare in Indiana (Barnes 1975).

Cornus drummondii E.Mey.
REFERENCE: Cruise 1969, Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)
ONTARIO: Essex Co. and Norfolk Co.
Map: Soper & Heimburger 1961 Ont, Soper & Heim-
burger 1976 Ont, Wilson 1964
Status: Rare in Canada.

Cornus florida L.

REFERENCE: Catling 1974, Cruise 1969, IBP-CT 1974,
Kershaw 1976, Stewart & James 1969 and maps

RANGE: swOnt

Map: Fox & Soper 1952 Ont, Hosie 1969 Can, Little
1971, Soper & Heimburger 1976 Ont

STATUS: Rare in Canada.

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976, Zander 1976).

Corydalis flavula (Raf.)DC.
REFERENCE: Campbell 1976, Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: Pt. Pelee and Pelee Is.
Map: Ownbey 1947
STATUS: Rare in Canada. Extremely rare in western New
York (Clinton Herbarium 1974).

Crataegus douglasii Lindl.
REFERENCE: Maps
RANGE: Aka, BC-Sask, Ont (Boivin 1967)
Map: Given & Soper 1976 Ont, Hultén 1968, Soper &
Heimburger 1976 Ont
STATUS: Rare in Minnesota and Michigan (Morley 1972,
Wagner 1976).

Cryptogramma crispa (L.)R.Br. var. acrosticoides
(R.Br.)C.B.Clarke
REFERENCE: Britton 1976 and maps
RANGE: Aka-NWT, BC-Man, Ont (Boivin 1967)
ONTARIO: Great Lakes
Map: Given & Soper 1976 Ont, Hultén 1958, Soper 1960
Ont

Cyperus engelmannii Steud.
REFERENCE: Beschel et al. 1970, Kershaw 1976
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada. Threatened in Pennsylvania
(Wherry 1975).

Cyperus erythrorhizos Muhl.
REFERENCE: Cruise 1969, Kershaw 1976, Reznicek 1975-
76
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada.

Cyperus ferruginescens Boeck.

REFERENCE: Beschel et al. 1970, Kershaw 1976, Reznicek
1975-76

RANGE: swOnt-PQ (Boivin 1967)
STATUS: Rare in Canada.

Cyperus houghtonii Torr.
REFERENCE: Beschel et al. 1970
RANGE: seMan-swPQ (Boivin 1967)

STATUS: Threatened in Wisconsin and Pennsylvania
(Read 1976, Wherry 1975).

Cypripedium arietinum R.Br.

REFERENCE: Beschel et al. 1970, Brunton 1974-75, Cat-
ling 1974, Cruise 1969, FON 1969, IBP-CT 1974 and
maps

RANGE: Man-PQ, NS

Map: Ayensu 1975 US, Case 1964 Great Lakes, Luer
1975, Soper 1977 Ont

STATUS: Rare in Canada. Threatened in the United
States (Ayensu 1975, Smithsonian Institution 1975).
Endangered in Wisconsin and New Hampshire (Read
1976, Hodgdon 1973). Threatened in Michigan (Wag-
ner 1976).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in Minnesota, Wisconsin, New York (McGaugh
& Genoways 1976) and Vermont (Vermont 1957,
1974).

Cypripedium candidum Muhl.
REFERENCE: Catling & Whiting 1976, Catling 1974, Cruise
1969, IBP-CT 1974, Kershaw 1976, Kershaw & Mor-
ton 1976, Lafontaine 1974, Petrie 1976 and maps

RANGE: Sask, Man, sOnt (Boivin 1967)

Map: Ayensu 1975 US, Case 1964 Great Lakes, Luer
1975

STATUS: Rare in Canada; endangered in Ontario (Catling
& Whiting 1976). Threatened in the United States
(Ayensu 1975, Smithsonian Institution 1975). Endan-
gered in Wisconsin and Illinois (Read 1976, Paulson &
Schwegman 1976). Threatened in Michigan (Wagner
1976). Extirpated in Pennsylvania (Wherry 1975).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in Minnesota, Wisconsin and New York
(McGaugh & Genoways 1976).

Cypripedium passerinum Richards.

REFERENCE: Soper 1965 and maps

RANGE: Aka-NWT, BC-nOnt-PQ

ONTARIO: nOnt, disjunct L. Superior

Map: Given & Soper 1976 Ont, Luer 1975, Raup 1947

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States.

Cystopteris fragilis (L.)Bernh. var. laurentiana Weath.
REFERENCE: Britton 1976
RANGE: Ont-PQ, NS-Nfld, local (Boivin 1967)
ONTARIO: Great Lakes
STATUS: Rare in Michigan (Wagner 1976).

Cystopteris montana (Lam.)Bernh.
REFERENCE: Kershaw & Morton 1976 and maps
RANGE: Aka-NWT, BC-Alta, ncOnt, PQ, Nfld, local
(Boivin 1967)
ONTARIO: L. Superior
Map: Given and Soper 1976 Ont, Hultén 1958, Kershaw
1976, Porsild 1966

Danthonia compressa = D. sericea

Danthonia sericea Nutt.
(D. compressa Austin)
REFERENCE: Dore 1959 and map
RANGE: eOnt (Fernald 1950)
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US
STATUS: Rare in Canada.

Deschampsia caespitosa (L.)Beauv. var. maritima Vasey
REFERENCE: Map
RANGE: Aka-NWT, nOnt
ONTARIO: Hudson and James Bays
Map: Dore & McNeill 1976 Ont

Desmodium canescens (L.)DC.
REFERENCE: Kershaw 1976
RANGE: swOnt (Boivin 1967)
Map: Isely 1955
STATUS: Rare in Canada.

Desmodium ciliare (Muhl.)DC.
REFERENCE: CAN, Kershaw 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Niagara Falls
Map: Isely 1955
STATUS: Rare and possibly extirpated in Canada.

Desmodium cuspidatum (Muhl.)Loud.
REFERENCE: Cruise 1969, Kershaw 1976, Stewart &
James 1969
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada. Endangered in New Hampshire
(Hodgdon 1973).

23

Desmodium illinoense Gray
REFERENCE: CAN, Kershaw 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Komoka
Map: Isely 1955
STATUS: Rare and possibly extirpated in Canada. Rare in
Minnesota (Morley 1972).

Desmodium marilandicum (L.)DC.
REFERENCE: CAN, Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: Lambton Co.
Map: Isely 1955
STATUS: Rare in Canada. Endangered in New Hampshire
(Hodgdon 1973).

Desmodium rotundifolium (Michx.)DC.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
Map: Isely 1955
STATUS: Rare in Canada. Endangered in New Hampshire
(Hodgdon 1973).

Desmodium sessilifolium (Torr.)T.& G.
REFERENCE: Kershaw 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Sandwich
Map: Isely 1955
STATUS: Rare and possibly extirpated in Canada. Threat-
ened in Pennsylvania (Wherry 1975).

Dioscorea villosa L.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
Map: Soper 1956 Ont
STATUS: Rare in Canada.

Disporum lanuginosum (Michx.)Nicholson
REFERENCE: Cruise 1969, Kershaw 1976, Stewart &
James 1969 and maps
RANGE: swOnt (Boivin 1967)
Map: Jones 1951, Wood 1970
STATUS: Rare in Canada.

Disporum trachycarpum (Wats.)B.& H.
REFERENCE: Reznicek 1975-76
RANGE: BC-nOnt (Boivin 1967)

Map: Jones 1951, Wood 1970

Draba alpina L.
REFERENCE: Mulligan 1975-76 and maps
RANGE: Aka-NWT, nBC, neMan-nOnt-nwPQ (Mulligan
1976)
ONTARIO: Hudson Bay
Map: Hultén 1968, Porsild 1964

Draba aurea Vahl
REFERENCE: Kershaw & Morton 1976, Mulligan 1975-76
and maps
RANGE: Aka-NWT, BC-nOnt-PQ, Lab (Mulligan 1976)
ONTARIO: nOnt, disjunct L. Superior
Map: Hultén 1968, Porsild 1966

24

Draba cana Rydb.
(D. lanceolata auct.)

REFERENCE: Brunton & Lafontaine 1974a, FON 1969,
Kershaw 1976, Kershaw & Morton 1976 and maps

RANGE: Aka-NWT, BC-swAlta, nwSask, Ont, PQ-NB

ONTARIO: Great Lakes

Map: Hultén 1968, Mulligan 1971

Draba cinerea Adams
REFERENCE: Maps
RANGE: Aka-NWT, nBC, nSask, nOnt, PQ
ONTARIO: Hudson Bay
Map: Hultén 1968, Mulligan 1971, Porsild 1964

Draba glabella Pursh

(D. hirta auct.)

REFERENCE: Brunton 1974-75, Moir 1958, Reznicek
1975-76 and maps

RANGE: Aka-NWT, BC-Alta, Man-Ont-NB, NS-Lab
(Mulligan 1976)

ONTARIO: nOnt, disjunct Manitoulin Is. and cOnt

Map: Hultén 1968, Mulligan 1970, Porsild 1964, Raup
1947

Draba hirta = D. glabella

Draba incana L.
REFERENCE: Moir 1958 and maps
RANGE: nOnt-PQ, PEI, Nfld-Lab (Mulligan 1976)
ONTARIO: nOnt, disjunct L. Superior
Map: Given & Soper 1976 Ont, Hultén 1958
STATUS: Threatened in Michigan (Wagner 1976).

Draba lanceolata = D. cana

Draba nivalis Liljebl.
REFERENCE: Maps
RANGE: Aka-NWT, BC-Alta, Man-nOnt-PQ, Nfld-Lab
ONTARIO: Hudson Bay
Map: Hultén 1968, Mulligan 1974, Porsild 1964

Draba reptans Lam.
REFERENCE: Kershaw 1976, Mulligan 1975-76
RANGE: sAlta-sOnt (Mulligan 1976)
STATUS: Threatened in Pennsylvania (Wherry 1975).

Drosera linearis Goldie

REFERENCE: Catling 1974, FON 1969, Krotkov 1940 and
maps

RANGE: BC-Ont, PQ, Nfld, local (Boivin 1967)

ONTARIO: Great Lakes

Map: Cruise & Catling 1974 Ont, Wynne 1944

STATUS: Endangered in Wisconsin (Read 1976). Rare in
Minnesota (Morley 1972).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976, Zander 1976).

Dryas drummondii Richards.

REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
maps

RANGE: Aka-NWT, BC-Sask, ncOnt, PQ, Nfld (Boivin
1967)

ONTARIO: L. Superior

Map: Given & Soper 1976 Ont, Hultén 1968, Porsild
1947

Dryas integrifolia Vahl
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, BC-Alta, Man-nOnt-NB, Nfld-Lab
(Boivin 1967)
ONTARIO: nOnt, disjunct L. Superior
Map: Given & Soper 1976 Ont, Hultén 1968, Porsild
1947, Savile 1961, Young 1971

Dryopteris filix-mas (L.)Schott

REFERENCE: FON 1969 and maps

RANGE: BC-Alta, Ont-PQ, NS-Nfld (Boivin 1967)

ONTARIO: Great Lakes

Map: Britton & Soper 1966 Ont, Given & Soper 1976
Ont, Hultén 1964

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Dryopteris goldiana (Hook.)Gray

REFERENCE: Beschel et al. 1970, Britton 1976, Brunton
1974-75, Cruise 1969, FON 1969, Reznicek 1975-76
and maps

RANGE: sOnt-NB (Boivin 1967)

Map: Britton & Soper 1966 Ont, Wagner & Wagner 1965

STATUS: Rare in Minnesota (Morley 1972).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Dryopteris hexagonoptera = Phegopteris hexagonoptera

Dryopteris robertiana = Gymnocarpium robertianum

Dupontia fisheri R.Br.
REFERENCE: Maps
RANGE: Aka-NWT, Man-nOnt-PQ, Lab (Boivin 1967)
ONTARIO: Hudson and James Bays
Map: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964

Echinochloa walteri (Pursh)Nash
REFERENCE: Beschel et al. 1970, Cruise 1969, Dore 1959
and map
RANGE: sOnt-swPQ (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Gould et al. 1972
STATUS: Rare in Minnesota (Morley 1972).

Echinopanax horridum = Oplopanax horridus

Elatine minima (Nutt.)Fisch.& Mey.
REFERENCE: CAN and map
RANGE: Ont-NS, Nfld (Boivin 1967)
ONTARIO: Great Lakes
Map: Fassett 1939

Eleocharis equisetoides (Ell.)Torr.

REFERENCE: Cruise 1969, Kershaw 1976, Reznicek 1975-
76

RANGE: swOnt (Boivin 1967)

ONTARIO: Long Pt.

Map: Svenson 1939

STATUS: Rare in Canada. Extirpated in Wisconsin and
Illinois (Read 1976, Paulson and Schwegman 1976).
Rare in Indiana (Barnes 1975).

Eleocharis geniculata (L.)R.& S.
REFERENCE: Cruise 1969, Kershaw 1976, Pratt 1974,
Reznicek 1975-76
RANGE: sOnt (Fernald 1950)
ONTARIO: Great Lakes
STATUS: Rare in Canada. Rare in Indiana (Barnes 1975).

Eleocharis intermedia (Muhl.)Schult.
REFERENCE: Beschel et al. 1970, CAN, DAO
RANGE: Ont-PQ (Fernald 1950)

ONTARIO: Thunder Bay and sOnt

Eleocharis olivacea Torr.
REFERENCE: Beschel et al. 1970, FON 1969, Krotkov 1940
and map
RANGE: sOnt, PQ, NS (Boivin 1967)
Map: Svenson 1939
STATUS: Threatened in Wisconsin (Read 1976). Rare in
Minnesota (Morley 1972).

Eleocharis parvula (R.& S.)Link
REFERENCE: Brunton 1974-75 and map
RANGE: BC, wOnt-Nfld (Boivin 1967)
Map: Hultén 1964, Svenson 1934
STATUS: Extirpated in Michigan (Wagner 1976).

Eleocharis quadrangulata (Michx.)R.& S. var. crassior

Fern.

REFERENCE: Cruise 1969, Kershaw 1976, Reznicek 1975-
76 and map

RANGE: sOnt (Boivin 1967)

Map: Svenson 1939

STATUS: Rare in Canada. Possibly extirpated in Wiscon-
sin (Read 1976).

Eleocharis rostellata Torr.
REFERENCE: FON 1969, Krotkov 1940, Reznicek 1975-76
and map
RANGE: BC, sOnt, NS (Boivin 1967)
Map: Svenson 1934
STATUS: Endangered in Wisconsin (Read 1976). Threat-
ened in Pennsylvania (Wherry 1975).

Elodea nuttallii (Planch.)St.John
REFERENCE: Kershaw 1976, Stewart & James 1969 and
map
RANGE: nOnt-NB (Boivin 1967, CAN)
Map: Soper 1960 Ont, St. John 1965
STATUS: Rare in Ohio (Stuckey & Roberts 1976).

25

Elymus diversiglumis Scribn.& Ball
(E. interruptus auct.)
REFERENCE: Kershaw 1976
RANGE: seSask-nwOnt (Boivin 1967, Bowden 1964)
Map: Hitchcock & Chase 1950 US

Elymus glaucus Buckl.
REFERENCE: Maps
RANGE: Aka-YT, BC-Sask, Man, nOnt (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US, Hultén 1968

Elymus interruptus = E. diversiglumis

Elymus mollis Trin.
REFERENCE: Maps
RANGE: Aka-NWT, BC-nOnt-Lab
ONTARIO: nOnt, disjunct L. Superior
Map: Bowden 1957, Dore & McNeill 1976 Ont, Guire &
Voss 1963 Great Lakes, Hultén 1964, Hultén 1968

Elymus riparius Wieg.
REFERENCE: Beschel et al. 1970 and map
RANGE: Ont-sPQ (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

Elymus villosus Muhl.
REFERENCE: Beschel et al. 1970, Dore 1959, FON 1969,
Krotkov 1940, Stewart & James 1969 and map
RANGE: s&eOnt-swPQ (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US
STATUS: Rare in Canada.

Epilobium leptocarpum Haussk. var. macounii Trel.
REFERENCE: FON 1969, Kershaw 1976, Kershaw & Mor-
ton 1976, Krotkov 1940
RANGE: BC-Man, scOnt, PQ-Nfld, local (Fernald 1950)
ONTARIO: Bruce Pen.

Epilobium paniculatum Nutt. var. subulatum
(Haussk.)Fern.
REFERENCE: Fernald 1950, FON 1969
RANGE: BC-Sask, scOnt
ONTARIO: L. Huron

Eragrostis hypnoides (Lam.)BSP.
REFERENCE: Beschel et al. 1970, Cruise 1969, Dore 1959,
Stewart & James 1969 and map
RANGE: seSask-sOnt-swPQ (Boivin 1967)
Map: Dore & McNeill 1976 Ont

Erigenia bulbosa (Michx.)Nutt.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
Map: Soper 1962 Ont
STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976).

Erythronium albidum Nutt.
REFERENCE: CAN, Kershaw 1976
RANGE: sOnt (Boivin 1967)
Status: Rare in Canada.

26

Euonymus atropurpureus Jacq.

REFERENCE: Cruise 1969, IBP-CT 1974, Kershaw 1976,
Soper 1962, Stewart & James 1969 and maps

RANGE: swOnt (Boivin 1967)

Map: Fox & Soper 1953 Ont, Soper & Heimburger 1961
Ont, Soper & Heimburger 1976 Ont, Zander 1976
Lake Erie

STATUS: Rare in Canada.

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976, Zander 1976).

Eupatorium altissimum L.
REFERENCE: CAN, Kershaw 1976
RANGE: swOnt
ONTARIO: Essex Co. and Wentworth Co.
STATUS: Rare in Canada.

Eupatorium coelestinum L.
REFERENCE: CAN, Kershaw 1976, Pratt 1974, Reznicek
1975-76
RANGE: swOnt
ONTARIO: Pt. Pelee
Status: Rare in Canada.

Eupatorium purpureum L.
REFERENCE: FON 1969, IBP-CT 1974 and maps
RANGE: swOnt (Boivin 1967)
Map: Grant 1953, Soper 1960 Ont
STATUS: Rare in Canada.

Euphorbia commutata Engelm.
REFERENCE: Beschel et al. 1970, Kershaw 1976
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976).

Euphorbia corollata L.
REFERENCE: Cruise 1969
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada.

Euphorbia obtusata Pursh
REFERENCE: Campbell & Reznicek 1976, Kershaw 1976
RANGE: swOnt
ONTARIO: Pelee Is.
STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976). Threatened in Pennsylvania (Wherry
1975). Rare in Indiana (Barnes 1975).

Euphrasia frigida = E. vinacea

Euphrasia vinacea Sell & Yeo

(E. frigida auct.)

REFERENCE: Kershaw 1976, Kershaw & Morton 1976, Sell
& Yeo 1970 and map

RANGE: Man, neOnt

ONTARIO: James Bay

Map: Given & Soper 1976 Ont

STATUS: Rare in Canada.

Festuca baffinensis Polunin
REFERENCE: Maps
RANGE: Aka-NWT, BC-Alta, nOnt
ONTARIO: Hudson Bay
Map: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964

Festuca brachyphylla Schult.
REFERENCE: Maps
RANGE: Aka-NWT, BC-Alta, Man-nOnt-PQ, Nfld-Lab
ONTARIO: nOnt, disjunct L. Superior
Map: Dore & McNeill 1976 Ont, Given & Soper 1976 Ont,
Hultén 1968, Porsild 1964

Festuca occidentalis Hook.
REFERENCE: Dore 1975, Kershaw 1976 and maps
RANGE: BC-Alta, Ont (Boivin 1967)
ONTARIO: Great Lakes
Map: Dore & McNeill 1976 Ont, Given & Soper 1976 Ont,
Hitchcock & Chase 1950 US
STATUS: Endangered in Wisconsin (Read 1976).

Festuca rubra L. var. altaica Drobov
(F. rubra var. arenaria auct.)
REFERENCE: Maps
RANGE: NWT, Sask-neOnt-Nfld (Fernald 1950)
ONTARIO: James Bay
Map: Dore & McNeill 1976 Ont, Porsild 1964

Festuca rubra var. arenaria = F. rubra var. altaica

Festuca rubra L. var. juncea (Hack.)Richter
REFERENCE: Map
RANGE: Ont-Nfld (Fernald 1950)
ONTARIO: Great Lakes
Map: Dore & McNeill 1976 Ont

Festuca rubra L. var. rubra
REFERENCE: Maps
RANGE: Aka-NWT, BC-neOnt-NS, Lab (Boivin 1967,
Fernald 1950)
ONTARIO: James Bay
Map: Dore & McNeill 1976 Ont, Porsild 1966

Festuca scabrella Torr.
REFERENCE: Maps
RANGE: BC-Man, ncOnt-PQ, Nfld
ONTARIO: Thunder Bay
Map: Dore & McNeill 1976 Ont, Given & Soper 1976 Ont,
Hultén 1968, Johnston 1958
STATUS: Threatened in Michigan (Wagner 1976).

Fimbristylis autumnalis (L.)R.& S.
REFERENCE: Catling et al. 1977, Cruise 1969, Kershaw
1976, Reznicek 1975-76 and map
RANGE: sOnt-swPQ (Boivin 1967)
Map: Kral 1971 US, Soper 1962 Ont
STATUS: Rare in Canada.

Fimbristylis drummondii = F. spadicea

Fimbristylis spadicea (L.)Vahl
(F. drummondii Boechl.)
REFERENCE: CAN and map
RANGE: swOnt
ONTARIO: St. Clair R.
Map: Soper 1962 Ont
STATUS: Rare in Canada.

Floerkea proserpinacoides Willd.
REFERENCE: Kershaw 1976 and map
RANGE: Ont-swPQ, NS (Boivin 1967)
Map: Becker 1960
STATUS: Rare in Canada. Rare in Minnesota (Morley
1972).

Frasera caroliniensis = Swertia caroliniensis

Fraxinus quadrangulata Michx.

REFERENCE: IBP-CT 1974, Kershaw 1976, Lafontaine
1974, Stewart & James 1969 and maps

RANGE: swOnt (Boivin 1967)

ONTARIO: Pt. Pelee and Pelee Is.

Map: Fox & Soper 1953 Ont, Hosie 1969 Can, Little 1971

STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976).

Galium kamtschaticum Steller
REFERENCE: Maps
RANGE: Aka, BC, ncOnt, NB-Nfld, local
ONTARIO: L. Superior
Map: Given & Soper 1976 Ont, Hultén 1968

Galium pilosum Ait.
REFERENCE: Beschel et al. 1970, Cruise 1969, Kershaw
1976
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada.

Gaura biennis L.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
RANGE: Raven & Gregory 1972
STATUS: Rare in Canada. Rare in Minnesota (Morley
1972).

Gentiana alba Muhl.

(G. flavida Gray)

REFERENCE: Beschel et al. 1970, Kershaw 1976 and map

RANGE: seOnt (Boivin 1967)

Map: Pringle 1967

STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976). Rare in Michigan and Indiana (Wagner
1976, Barnes 1975).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Gentiana detonsa Rottb. var. nesophila (Th. Holm)Boivin
(G. nesophila Th. Holm, Gentianella detonsa
(Rottb.)G. Don ssp. nesophila (Th. Holm)J.M. Gillett)

REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
map

RANGE: NWT, nOnt-PQ, Nfld-Lab (Boivin 1967)

ONTARIO: Hudson and James Bays

Map: Gillett 1963, Raymond 1950b

Zi,

Gentiana detonsa Rottb. var. raupii (Pors.)Boivin

(G. raupii Pors., Gentianella detonsa (Rottb.) G. Don
ssp. raupii (Pors.)J.M. Gillett

REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
map

RANGE: Aka-NWT, Alta, nOnt (Boivin 1967)

ONTARIO: Hudson and James Bays

Map: Cody 1971, Gillett 1963, Porsild 1966

Gentiana flavida = G. alba
Gentiana nesophila = G. detonsa var. nesophila
Gentiana puberula = G. puberulenta

Gentiana puberulenta Pringle

(G. puberula Michx.)

REFERENCE: Catling 1974, Kershaw 1976 and map

RANGE: Man-sOnt

Map: Pringle 1967

STATUS: Rare in Canada. Threatened in Michigan (Wag-
ner 1976). Extremely rare in western New York (Clin-
ton Herbarium 1974).

PROTECTION: Protected by law in Minnesota and New
York (McGaugh & Genoways 1976).

Gentiana quinquefolia L.
(Gentianella quinquefolia (L.)Small)
REFERENCE: Kershaw 1976 and map
RANGE: sOnt (Boivin 1967)
Map: Gillett 1963, Zander 1976 Lake Erie
STATUS: Rare and possibly extirpated in Canada.

Gentiana raupii = G. detonsa var. raupii

Gentianella detonsa ssp. nesophila = Gentiana detonsa
var. nesophila

Gentianella detonsa ssp. raupii = Gentiana detonsa var.
raupii

Gentianella quinquefolia = Gentiana quinquefolia
Gerardia gattingeri = Agalinis gattingeri
Gerardia skinneriana = Agalinis skinneriana

Gerardia tenuifolia var. parviflora = Agalinis tenuifolia
var. parviflora :

Geum laciniatum Murray
REFERENCE: Beschel et al. 1970, Cruise 1969, Stewart &
James 1969
RANGE: sOnt-NS (Boivin 1967)
STATUS: Rare in Minnesota (Morley 1972).

Geum triflorum Pursh
REFERENCE: Map
RANGE: BC-sOnt (Boivin 1967)
Map: Catling et al. 1975 Ont
STATUS: Threatened in Michigan (Wagner 1976).

28

Geum vernum (Raf.)T.& G.
REFERENCE: Kershaw 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Essex Co.
Status: Rare in Canada. Rare in Michigan (Wagner
1976).

Gillenia trifoliata (L.)Moench
REFERENCE: Beschel et al. 1970, Kershaw 1976 and map
RANGE: sOnt (Boivin 1967)
Map: Soper 1962 Ont
Status: Rare in Canada.

Glaux maritima L. var. obtusifolia Fern.
REFERENCE: Maps
RANGE: eNWT, neOnt-NS, Nfld (Boivin 1967)
ONTARIO: James Bay
Map: Hultén 1968, Hultén 1971

Gleditsia triacanthos L.
REFERENCE: Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)
Map: Fox & Soper 1953 Ont, Hosie 1969 Can, Little
1971, Soper 1956 Ont
STATUS: Rare in Canada. Rare in Minnesota (Morley
1972).

Glyceria melicaria (Michx.)Hubbard
REFERENCE: Dore 1959 and map
RANGE: eOnt-NB, NS (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US
STATUS: Rare in Canada.

Glycyrrhiza lepidota Pursh
REFERENCE: IBP-CT 1974
RANGE: BC-Ont (Boivin 1967)
Map: Welsh 1960 cUS
STATUS: Threatened in Wisconsin (Read 1976).

Gnaphalium purpureum L. var. purpureum
REFERENCE: Reznicek 1975-76
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada.

Goodyera oblongifolia Raf.

REFERENCE: Catling 1974, FON 1969 and maps

RANGE: BC-Ont, PQ, NS

Map: Case 1964 Great Lakes, Given & Soper 1976 Ont,
Luer 1975

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in Minnesota, Wisconsin (McGaugh & Geno-
ways 1976) and Vermont (Vermont 1957, 1974)

Gymnocarpium robertianum (Hoffm.)Newm.

(Dryopteris robertiana (Hoffm.)Christens.)

REFERENCE: Britton 1976, FON 1969, Krotkov 1940 and
maps

RANGE: Aka-NWT, BC-Ont, PQ, Nfld

ONTARIO: Great Lakes

Map: Hultén 1964, Soper 1963 Great Lakes

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Gymnocladus dioica (L.)Koch

REFERENCE: Kershaw 1976 and maps

RANGE: swOnt (Boivin 1967)

ONTARIO: Pelee Is. and Lambton Co.

Map: Fox & Soper 1953 Ont, Hosie 1969 Can, Soper
1956 Ont

STATUS: Rare in Canada. Threatened in Wisconsin and
Michigan (Read 1976, Wagner 1976).

Habenaria blephariglottis = Platanthera blephariglottis
Habenaria ciliaris = Platanthera ciliaris

Habenaria flava var. herbiola = Platanthera flava var.
herbiola

Habenaria leucophaea = Platanthera leucophaea
Habenaria unalascensis = Piperia unalascensis

Hedysarum mackenzii Richards.
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, BC-Man, nOnt-PQ, Nfld (Boivin
1967)
ONTARIO: Hudson and James Bays
Map: Hultén 1968, Meusel et al. 1965, Porsild 1964

Helianthemum bicknellii Fern.
REFERENCE: Cruise 1969, Kershaw 1976 and map
RANGE: seMan-sOnt (Boivin 1967)
Map: Daoud & Wilbur 1965
STATUS: Rare in Canada.

Hemicarpha micrantha (Vahl)Pax

(Scirpus micranthus Vahl)

REFERENCE: CAN, Kershaw 1976, Reznicek 1975-76 and
map

RANGE: swOnt-swPQ (Boivin 1967)

ONTARIO: Amherstburg

Map: Friedland 1941

Status: Rare in Canada. Threatened in Michigan and
Pennsylvania (Wagner 1976, Wherry 1975).

Heuchera americana L.
REFERENCE: Kershaw 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Pelee Is. and Amherstburg
STATUS: Rare in Canada.

Hibiscus moscheutos var. purpurascens = H. palustris

——— — —

Hibiscus palustris L.

(H. moscheutos L. var. purpurascens Sweet)

REFERENCE: IBP-CT 1974, Kershaw 1976, Stewart &
James 1969 and maps

RANGE: sOnt (Boivin 1967)

Map: Fernald 1942, Soper 1962 Ont

STATUS: Rare in Canada. Extirpated in Wisconsin (Read
1976). Threatened in Michigan (Wagner 1976).

Hieracium gronovii L.
REFERENCE: Kershaw 1976
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada.

Hieracium longipilum Torr.
REFERENCE: Kershaw 1976
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada. Rare in Indiana (Barnes 1975).

Hieracium paniculatum L.
REFERENCE: Beschel et al. 1970, IBP-CT 1974
RANGE: Ont-PQ, NS (Boivin 1967)
STATUS: Rare in Canada.

Hieracium venosum L. var. nudicaule (Michx.)Farw.
REFERENCE: Kershaw 1976
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada. Rare in Indiana (Barnes 1975).

Hierochloe pauciflora R.Br.
REFERENCE: Maps
RANGE: Aka-NWT, Man-neOnt-PQ, Lab (Boivin 1967)
ONTARIO: Cape Henrietta Maria
Map: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964

Houstonia caerulea L.
REFERENCE: CAN, Reznicek 1975-76
RANGE: Ont-NS (Boivin 1967)
ONTARIO: Petawawa
STATUS: Endangered in Wisconsin (Read 1976).

Hybanthus concolor (T.F.Forster)Spreng.
REFERENCE: Cruise 1969, Kershaw 1976 and map
RANGE: sOnt (Boivin 1967)
Map: Soper 1962 Ont
STATUS: Rare in Canada. Possibly extirpated in Wiscon-
sin (Read 1976). Rare in Michigan (Wagner 1976).

Hydrastis canadensis L.

REFERENCE: Cruise 1969, Kershaw 1976 and maps

RANGE: swOnt (Boivin 1967)

Map: Lloyd & Lloyd 1908, Soper 1960 Ont, Zander 1976
Lake Erie

STATUS: Rare in Canada. Endangered in Illinois (Paulson
& Schwegman 1976). Threatened in Wisconsin and
Michigan (Read 1976, Wagner 1976). Rare in Minne-
sota (Morley 1972).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976, Zander 1976).

29

Hydrophyllum appendiculatum Michx.
REFERENCE: Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)

Map: Constance 1942, Soper 1976 Ont
STATUS: Rare in Canada.

Hydrophyllum canadense L.
REFERENCE: Cruise 1969, Kershaw 1976, Stewart &
James 1969 and map
RANGE: sOnt-swPQ (Boivin 1967)
Map: Constance 1942
STATUS: Rare in Canada.

Hymenoxys acaulis (Pursh)Parker var. glabra
(Gray)Parker
(Actinea acaulis (Pursh)Spreng. var. glabra
(Gray)Parker, A. herbacea (Greene)Robins.)
REFERENCE: Catling et al. 1975, FON 1969, Kershaw
1976, Kershaw & Morton 1976

RANGE: scOnt (Boivin 1967)
ONTARIO: Manitoulin Is.
STATUS: Rare in Canada.

Hypericum gentianoides (L.)BSP.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt-swPQ (Boivin 1967)
Map: Gillett 1976
STATUS: Rare in Canada.

Hypericum prolificum L.
(H. spathulatum (Spach)Steud.)
REFERENCE: Kershaw 1976 and maps
RANGE: sOnt (Boivin 1967)
Map: Gillet 1976, Soper & Heimburger 1961 Ont, Soper
& Heimburger 1976 Ont, Utech & Iltis 1970
STATUS: Rare in Canada.

Hypericum spathulatum = H. prolificum

Hypoxis hirsuta (L.)Cov.
REFERENCE: Beschel et al. 1970, Cruise 1969, IBP-CT
1974 and map
RANGE: Sask-swOnt (Boivin 1967)
Map: Soper 1976 Ont

Ipomoea pandurata (L.)G.F.W.Meyer
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: Pt. Pelee, Pelee Is. and Niagara Falls
Map: Soper 1962 Ont
STATUS: Rare in Canada.

Iris brevicaulis Raf.
REFERENCE: CAN, Kershaw 1976, Shields 1954
RANGE: swOnt (Boivin 1967)
ONTARIO: Pt. Pelee
STATUS: Rare in Canada.

30

Iris lacustris Nutt.

REFERENCE: Catling 1974, IBP-CT 1974, Kershaw 1976,
Kershaw & Morton 1976 and maps

RANGE: scOnt (Boivin 1967)

ONTARIO: Bruce Pen. and Manitoulin Is.

Map: Given & Soper 1976 Ont, Guire & Voss 1963, Soper
1977 Ont

STATUS: Rare in Canada. Threatened in the United
States (Smithsonian Institution 1975). Endangered in
Wisconsin (Read 1976). Threatened in Michigan
(Wagner 1976).

Isoetes lacustris var. macrospora = |. macrospora

Isoetes macrospora Dur.

(I. lacustris L. Var. macrospora (Dur.)of Hultén)
REFERENCE: Brayshaw 1964, Britton 1976 and maps
RANGE: Ont-NS, Nfld-Lab (Boivin 1967)

Map: Hultén 1958, Soper & Rao 1958 eCan
STATUS: Rare in Canada.

Isopyrum biternatum (Raf.)T.& G.
REFERENCE: Cruise 1969, Kershaw 1976, Stewart &
James 1969 and map
RANGE: sOnt (Boivin 1967)
MapP: Griggs 1913, Soper 1962 Ont
STATUS: Rare in Canada.

Isotria verticillata (Willd.)Raf.

REFERENCE: Catling & Whiting 1976, Cruise 1969, IBP-
CT 1974, Kershaw 1976, Lafontaine 1974 and maps

RANGE: swOnt
ONTARIO: Norfolk Co. and Komoka(extirpated)

Map: Case 1964 Great Lakes, Luer 1975, Soper 1962
Ont

STATUS: Rare in Canada; endangered in Ontario (Catling
& Whiting 1976). Endangered in New Hampshire
(Hodgdon 1973). Extremely rare in western New York
(Clinton Herbarium 1974). Rare in Michigan and Indi-
ana (Wagner 1976, Barnes 1975).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in New York (McGaugh & Genoways 1976) and
Vermont (Vermont 1957, 1974)

Jeffersonia diphylla (L.)Pers.

REFERENCE: Beschel et al. 1970, Cruise 1969, IBP-CT
1974, Kershaw 1976, Stewart & James 1969 and
maps

RANGE: sOnt (Boivin 1967)

Map: Soper 1962 Ont

STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976). Extremely rare in western New York
(Clinton Herbarium 1974). Rare in Minnesota and
Michigan (Morley 1972, Wagner 1976).

Juglans nigra L.

REFERENCE: Beschel et al. 1970, Cruise 1969, FON 1969,
IBP-CT 1974, Kershaw 1976, Stewart & James 1969
and maps

RANGE: sOnt (Boivin 1967)

Map: Fox & Soper 1953 Ont, Hosie 1969 Can, Little 1971

STATUS: Rare in Canada.

Juncus acuminatus Michx.
REFERENCE: Beschel et al. 1970, DAO
RANGE: BC, sOnt-PQ, NS (Boivin 1967)
Map: Fassett 1931 neNA

Juncus biflorus Ell.
REFERENCE: DAO, Reznicek 1975-76
RANGE: swOnt
ONTARIO: Essex Co.
STATUS: Rare in Canada. Rare in Michigan (Wagner
1976).

Juncus brachycarpus Engelm.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
Map: Fernald 1937
STATUS: Rare in Canada. Threatened in Michigan (Wag-
ner 1976). Rare in Minnesota (Morley 1972).

Juncus ensifolius Wikstr.
REFERENCE: Kershaw 1976, Kershaw & Morton 1976,
Reznicek 1975-76 and maps
RANGE: Aka, BC-Sask, neOnt-PQ (Boivin 1967)
ONTARIO: James Bay
Map: Dutilly & Lepage 1963 eCan, Hultén 1968

Juncus greenii var. vaseyi = J. vaseyi

Juncus longistylis Torr.
REFERENCE: DAO, Kershaw 1976, Kershaw & Morton
1976, Reznicek 1975-76 and map
RANGE: BC-Ont-PQ, Nfld (Boivin 1967, Fernald 1950)
ONTARIO: Albany R. and Detroit R.
Map: Dutilly et al. 1954

Juncus marginatus Rostk.
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: Ont-NS (Boivin 1967)
STATUS: Rare in Minnesota (Morley 1972).

Juncus militaris Bigel.
REFERENCE: Reznicek 1975-76 and map
RANGE: cOnt-NS, Nfld (Boivin 1967)
Map: Meusel et al. 1965
STATUS: Threatened in Michigan and Pennsylvania
(Wagner 1976, Wherry 1975).

Juncus secundus Beauv.
REFERENCE: Kershaw 1976
RANGE: eOnt (Boivin 1967)
STATUS: Rare in Canada. Rare in Indiana (Barnes 1975).

Juncus subtilis E.Mey.
REFERENCE: Reznicek 1975-76 and map
RANGE: nOnt-NB, Nfld (Boivin 1967)
Map: Lepage 1966

Juncus vaseyi Engelm.
(J. greenii Oakes & Tuckerm. var. vaseyi
(Engelm.)Boivin)
REFERENCE: Reznicek 1975-76
RANGE: NWT, BC-ncOnt-NB, NS-Lab (Boivin 1967)
ONTARIO: L. Superior
STATUS: Threatened in Michigan (Wagner 1976).

Justicia americana (L.)Vahl
REFERENCE: Beschel et al. 1970, Kershaw 1976 and map
RANGE: sOnt-swPQ (Boivin 1967)
Map: Soper 1960 Ont
STATUS: Rare in Canada. Threatened in Michigan (Wag-
ner 1976).

Kobresia simpliciuscula (Wahl.)Mack.
REFERENCE: CAN, Reznicek 1975-76 and maps
RANGE: Aka-NWT, BC-Alta, Man-nOnt-PQ, Nfld-Lab
(Boivin 1967)
ONTARIO: Hudson and James Bays
Map: Hultén 1958, Hultén 1968, Porsild 1964

Koeleria cristata = K. pyramidata
Koeleria gracilis = K. pyramidata
Koeleria macrantha = K. pyramidata

Koeleria pyramidata (Lam.)Beauv.
(K. cristata auct., K. gracilis auct., K. macrantha
auct.)
REFERENCE: Cruise 1969 and maps
RANGE: Aka-NWT, BC-PQ (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Hultén 1968

Koenigia islandica L.
REFERENCE: Reznicek 1975-76
RANGE: Aka-NWT, nOnt-PQ, Lab (Boivin 1967)
ONTARIO: Hudson Bay
Map: Hultén 1968, Porsild 1964

Krigia biflora (Walter)Blake
REFERENCE: Chinnappa 1976, Kershaw 1976
RANGE: Man-swOnt (Boivin 1967)
STATUS: Rare in Canada.

Krigia virginica (L.)Willd.
REFERENCE: Chinnappa 1976, Kershaw 1976
RANGE: sOnt (Fernald 1950)
STATUS: Rare in Canada; possibly alien (Gleason 1952).

Lactuca floridana (L.)Gaertn.
REFERENCE: Kershaw 1976
RANGE: seMan-swOnt (Boivin 1967)
STATUS: Rare in Canada. Rare in Minnesota (Morley
1972).

31

Lechea leggettii Britt.& Hollick var. moniliformis

(Bickn.)Hodgdon

REFERENCE: Cruise 1969 and map

RANGE: swOnt (Fernald 1950)

ONTARIO: Essex Co.

Map: Hodgdon 1938

STATUS: Rare in Canada. Threatened in Michigan (Wag-
ner 1976).

Lechea minor L.
REFERENCE: Cruise 1969 and map
RANGE: swOnt (Fernald 1950)
ONTARIO: Essex Co.
Map: Hodgdon 1938
STATUS: Rare in Canada. Rare in Michigan (Wagner
1976).

Lechea stricta Leggett
REFERENCE: Kershaw 1976 and map
RANGE: sOnt
ONTARIO: Belleville and Essex Co.
Map: Hodgdon 1938
STATUS: Rare in Canada. Rare in Indiana (Barnes 1975).

Ledum palustre L. var. decumbens Ait.
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, BC-nOnt-PQ, Lab (Boivin 1967)
ONTARIO: Hudson Bay
Map: Given & Soper 1976 Ont, Hultén 1968, Hultén
1971, Soper & Heimburger 1976 Ont

Lespedeza intermedia (L.)Pers.
REFERENCE: Kershaw 1976 and maps
RANGE: sOnt
Map: Clewell 1966, Isely 1955, Soper 1962 Ont
STATUS: Rare in Canada.

Lespedeza violacea (L.)Pers.
REFERENCE: Beschel et al. 1970, Kershaw 1976 and maps
RANGE: swOnt (Fernald 1950)
Map: Clewell 1966, Isely 1955, Soper 1962 Ont
STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976).

Lespedeza virginica (L.)Britt.

REFERENCE: Kershaw 1976 and maps

RANGE: swOnt (Boivin 1967)

ONTARIO: Essex Co.

Map: Clewell 1966, Isely 1955, Soper 1962 Ont

Status: Rare in Canada; possibily extirpated in Ontario
(Soper 1962). Endangered in Wisconsin and New
Hampshire (Read 1976, Hodgdon 1973).

Liatris aspera Michx. var. intermedia (Lunell)Gaiser
REFERENCE: CAN, Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: Grand Bend and Pt. Pelee
Map: Gaiser 1951
STATUS: Rare in Canada.

32

Liatris spicata (L.)Willd.
REFERENCE: CAN, Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
Map: Soper 1960 Ont
Status: Rare in Canada. Threatened in Wisconsin
(Read 1976).

Limosella aquatica L.
REFERENCE: Reznicek 1975-76 and map
RANGE: Aka-NWT, BC-nOnt-PQ, Lab, local (Boivin 1967)
ONTARIO: Hudson and James Bays
Map: Hultén 1968, Pennell 1935
STATUS: Endangered in New Hampshire (Hodgdon
1973).

Linum lewisii Pursh ssp. lepagei (Boivin)Mosquin
(L. lepagei Boivin, L. perenne L. ssp. lepagei
(Boivin)Lepage)

REFERENCE: Moir 1958 and maps

RANGE: eNWT, nMan-nOnt

ONTARIO: Hudson and James Bays

Map: Given & Soper 1976 Ont, Mosquin 1971

Linum lepagei = L. lewisii ssp. lepagei
Linum perenne ssp. lepagei = L. lewisii ssp. lepagei

Linum medium (Planch.)Britt. var. texanum
(Planch.)Fern.
REFERENCE: Cruise 1969 and map
RANGE: swOnt (Fernald 1950)
Map: Rogers 1963
STATUS: Rare in Canada.

Linum striatum Walt.
REFERENCE: Catling et al. 1977, Reznicek 1975-76
RANGE: sOnt (Fernald 1950)
Map: Rogers 1963
STATUS: Rare in Canada.

Linum sulcatum Riddell
REFERENCE: Beschel et al. 1970 and map
RANGE: sMan-sOnt, local (Boivin 1967)
Map: Rogers 1963, Rogers 1969
STATUS: Rare in Indiana (Barnes 1975).

Linum virginianum L.
REFERENCE: Kershaw 1976 and maps
RANGE: sOnt (Boivin 1967)
Map: Rogers 1963, Rogers 1969
STATUS: Rare in Canada.

Liparis lilifolia (L.)L.C.Rich
REFERENCE: Andrews 1961, Catling & Whiting 1976, Ker-
shaw 1976, Lafontaine 1974 and maps
RANGE: swOnt
ONTARIO: Komoka and Windsor
Map: Case 1964 Great Lakes, Luer 1975, Soper 1960
Ont

STATUS: Rare in Canada; endangered in Ontario (Catling
& Whiting 1976). Extremely rare in western New York
(Clinton Herbarium 1974).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in Minnesota, Wisconsin, New York (McGaugh
& Genoways 1976) and Vermont (Vermont 1957,
1974).

Lippia lanceolata var. recognita = Phyla lanceolata var.
recognita

Liriodendron tulipifera L.
REFERENCE: Cruise 1969, IBP-CT 1974, Kershaw 1976,
Lafontaine 1974, Stewart & James 1969 and maps
RANGE: swOnt (Boivin 1967)
Map: Fox & Soper 1952 Ont, Hosie 1969 Can, Little
1971, Maycock 1963
STATUS: Rare in Canada.

Listera australis Lindl.

REFERENCE: Greenwood 1962, Kershaw 1976, Lafontaine
& White 1974, Whiting 1971, Whiting 1974 and maps

RANGE: sOnt, PQ, NS

Map: Luer 1975, Soper 1960 Ont

STATUS: Rare in Canada. Threatened in Pennsylvania
(Wherry 1975).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in New York (McGaugh & Genoways 1976) and
Vermont (Vermont 1957, 1974)

Listera borealis Morong

REFERENCE: Lafontaine 1974 and maps

RANGE: Aka-NWT, BC-nOnt-Nfld

Map: Given & Soper 1976 Ont, Luer 1975, Raup 1947,
Soper 1960 Ont

STATUS: Rare in Canada.

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States.

Lithospermum incisum Lehm.
REFERENCE: Reznicek 1975-76
RANGE: BC-sOnt (Boivin 1967)
STATUS: Rare in Indiana (Barnes 1975).

Lithospermum latifolium Michx.
REFERENCE: Reznicek 1975-76
RANGE: Ont-sPQ (Boivin 1967)
STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976).

Littorella americana Fern.
REFERENCE: CAN and map
RANGE: wOnt-Nfld.
Map: Bassett 1973
STATUS: Threatened in Wisconsin (Read 1976). Rare in
Minnesota and Michigan (Morley 1972, Wagner
1976).

Ludwigia alternifolia L.
REFERENCE: Kershaw 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Essex Co.
STATUS: Rare in Canada. Threatened in Michigan (Wag-
ner 1976).

Ludwigia polycarpa Short & Peter
REFERENCE: Kershaw 1976
RANGE: swOnt (Boivin 1967)
Map: Fernald 1918
STATUS: Rare in Canada. Threatened in Pennsylvania
(Wherry 1975).

Lupinus perennis L.
REFERENCE: Cruise 1969, Kershaw 1976 and maps
RANGE: sOnt (Boivin 1967)
Map: Dunn 1965, Phillips 1955, Soper 1960 Ont
STATUS: Rare in Canada.

Lythrum alatum Pursh
REFERENCE: CAN, Kershaw 1976
RANGE: BC, swOnt (Boivin 1967)
STATUS: Rare in Canada.

Magnolia acuminata L.

REFERENCE: Cruise 1969, IBP-CT 1974, Kershaw 1976,
Lafontaine 1974, Stewart & James 1969 and maps

RANGE: swOnt (Boivin 1967)

ONTARIO: Norfolk Co. and Niagara region

Map: Fox & Soper 1952 Ont, Hardin 1954, Hosie 1969
Can, Little 1971

STATUS: Rare in Canada. Rare in Indiana (Barnes 1975).

Malaxis paludosa (L.)Sw.

REFERENCE: Baldwin 1961, Catling & Whiting 1976, Ker-
shaw 1976, Kershaw & Morton 1976, Lafontaine 1974
and maps

RANGE: Aka-NWT, BC-nwoOnt, local

Map: Case 1964 Great Lakes, Given & Soper 1976 Ont,
Luer 1975, Soper 1960 Ont

STATUS: Rare in Canada.

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in Minnesota (McGaugh & Genoways 1976).

Melandrium apetalum (L.)Fenzl ssp. arcticum
(E.Fries)Hult.
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, BC-Alta, Man-nOnt-PQ
ONTARIO: Hudson and James Bays
Map: Hultén 1968, Porsild 1964

33

Melica smithii (Porter)Vasey
REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
maps
RANGE: BC-Alta, Ont (Boivin 1967)
ONTARIO: Great Lakes

Map: Boyle 1945, Dore & McNeill 1976 Ont, Fernald
1935, Given & Soper 1976 Ont

STATUS: Endangered in Wisconsin (Read 1976).

Mertensia maritima (L.)S.F.Gray
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, BC, Man-nOnt-PQ, NS-Lab (Boivin
1967)
ONTARIO: Hudson and James Bays
Map: Hultén 1958, Hultén 1968, Porsild 1964

Mertensia virginica (L.)Pers.

REFERENCE: Catling 1974, Cruise 1969, Kershaw 1976,
Stewart & James 1969 and map

RANGE: sOnt-swPQ (Boivin 1967)
Map: Soper 1976 Ont

STATUS: Rare in Canada. Threatened in Michigan (Wag-
ner 1976).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976, Zander 1976).

Mikania scandens (L.)Willd.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt
ONTARIO: Malden
Map: Soper 1962 Ont

STATUS: Rare in Canada; possibily extirpated in Ontario
(Soper 1962). Rare in Indiana (Barnes 1975).

Mimulus alatus Ait.
REFERENCE: Kershaw 1976, Pratt 1974 and maps
RANGE: swOnt (Boivin 1967)
ONTARIO: Rondeau Prov. Pk. and Niagara region
Map: Pennell 1935, Soper 1960 Ont

STATUS: Rare in Canada. Threatened in Michigan (Wag-
ner 1976).

Mimulus glabratus HBK. var. fremontii (Benth.)Grant
REFERENCE: Kershaw 1976 and maps
RANGE: seSask-Ont-PQ (Boivin 1967, Rousseau et al.
1970)
ONTARIO: Cochrane Dist. and Toronto(extirpated)
Map: Pennell 1935, Soper 1960 Ont
STATUS: Rare in Canada.

Mimulus moschatus Dougl.
REFERENCE: Maps
RANGE: BC, cOnt-Nfld (Boivin 1967)
Map: Given & Soper 1976 Ont, Soper 1960 Ont

Minuartia rubella = Arenaria rubella

34

Monarda didyma L.

REFERENCE: Kershaw 1976 and maps

RANGE: swOnt-swPQ (Boivin 1967)

Map: McClintock & Epling 1942, Scora 1967, Zander
1976 Lake Erie

STATUS: Rare in Canada.

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Montia fontana L.
REFERENCE: Reznicek 1975-76 and maps
RANGE: Aka-NWT, nOnt-PQ, NS-Lab, local (Boivin
1967)
ONTARIO: Hudson and James Bays
Map: Hultén 1968, Meusel et al. 1965

Morus rubra L.

REFERENCE: Cruise 1969, Kershaw 1976, Stewart &
James 1969 and maps

RANGE: swOnt (Boivin 1967)

Map: Fox & Soper 1953 Ont, Hosie 1969 Can, Soper
1960 Ont

STATUS: Rare in Canada. Rare in Minnesota and Michi-
gan (Morley 1972, Wagner 1976).

Muhlenbergia racemosa (Michx.)BSP.
REFERENCE: Map
RANGE: BC-ncOnt (Boivin 1967)
ONTARIO: L. Superior and Lake of the Woods
Map: Dore & McNeill 1976 Ont, Pohl 1969

Muhlenbergia schreberi J.F.Gmelin
REFERENCE: Kershaw 1976 and map
RANGE: sOnt (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Pohl 1969
STATUS: Rare in Canada; possibly alien (Dore & McNeill
1976). Rare in Michigan (Wagner 1976).

Muhlenbergia sylvatica Torr.
REFERENCE: Beschel et al. 1970, Kershaw 1976 and map
RANGE: swOnt-swPQ (Fernald 1950)
ONTARIO: Welland Co.
Map: Dore & McNeill 1976 Ont, Pohl 1969
STATUS: Rare in Canada.

Muhlenbergia tenuiflora (Willd.)BSP.
REFERENCE: Beschel et al. 1970, Kershaw 1976 and maps
RANGE: sOnt-PQ (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Pohl 1969
STATUS: Rare in Canada.

Myosotis macrosperma Engelm.
REFERENCE: Campbell & Reznicek 1976, Reznicek 1975-
76
RANGE: swOnt
Map: Fernald 1941
STATUS: Rare in Canada.

Myosotis verna Nutt.
REFERENCE: Map
RANGE: BC, sOnt (Boivin 1967)
Map: Catling et al. 1975 Ont
STATUS: Rare in Canada. Rare in Minnesota (Morley
1972).

Myosurus minimus L.
REFERENCE: Beschel et al. 1970 and maps
RANGE: BC-swOnt (Boivin 1967)
Map: Meusel et al. 1965, Soper 1960 Ont

Myrica pensylvanica Loisel.

REFERENCE: IBP-CT 1974, Kershaw 1976 and maps

RANGE: swOnt, PQ-Nfld (Boivin 1967)

ONTARIO: Turkey Pt.

Map: Soper & Heimburger 1961 Ont, Soper & Heim-
burger 1976 Ont

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976, Zander 1976).

Myriophyllum farwellii Morong

REFERENCE: Brunton 1974-75, Reznicek 1975-76

RANGE: BC, nOnt-NB, NS (Boivin 1967, Ceska & War-
rington 1976)

Map: Voss 1965 Great Lakes

STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976). Threatened in Michigan and Pennsyl-
vania (Wagner 1976, Wherry 1975).

Myriophyllum humile (Raf.)Morong
REFERENCE: Reznicek 1975-76
RANGE: Ont-NS (Boivin 1967)

Najas gracillima (A.Br.)Magnus
REFERENCE: Kershaw 1976 and map
RANGE: eOnt, NS (Boivin 1967)
Map: Clausen 1936, Meusel et al. 1965
STATUS: Rare in Canada. Extirpated in Ohio (Stuckey &
Roberts 1976).

Najas guadalupensis (Spreng.)Magnus
REFERENCE: Beschel et al. 1970, Kershaw 1976
RANGE: Ont-swPQ (Boivin 1967)
Map: Clausen 1936
STATUS: Rare in Canada. Rare in Indiana (Barnes 1975).

Nelumbo lutea (Willd.)Pers.

REFERENCE: Catling 1974, Cruise 1969, IBP-CT 1974,
Kershaw 1976 and map

RANGE: swOnt (Boivin 1967)

Map: Soper 1962 Ont

STATUS: Rare in Canada. Endangered in Michigan (Wag-
ner 1976).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976, Zander 1976).

Nuphar advena = N. luteum ssp. macrophyllum

Nuphar luteum Sm. ssp. macrophyllum (Small)Beal
(N. advena Ait.)
REFERENCE: Cruise 1969, Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
Map: Beal 1956
STATUS: Rare in Canada.

Nyssa sylvatica Marsh.
REFERENCE: Cruise 1969, Kershaw 1976, Soper 1962,
Stewart & James 1969 and maps
RANGE: sOnt (Boivin 1967)
Map: Eyde 1963, Fox & Soper 1953 Ont, Hosie 1969
Can, Little 1971
STATUS: Rare in Canada.

Oenothera nuttallii Sweet
REFERENCE: CAN
RANGE: BC-ncOnt (Boivin 1967)
ONTARIO: L. Superior

Oenothera pilosella Raf.
REFERENCE: CAN, Kershaw 1976
RANGE: swOnt-swPQ (Boivin 1967)
STATUS: Rare in Canada.

Onosmodium molle Michx. var. hispidissimum
(Mack.)Cronq.
REFERENCE: Beschel et al. 1970, Kershaw 1976, Stewart
& James 1969
RANGE: sMan-swOnt (Boivin 1967)
STATUS: Threatened in Wisconsin (Read 1976). Rare in
Indiana (Barnes 1975).

Oplopanax horridus (Sm.)Miq.

(Echinopanax horridum (Sm.)Decne.& Planch.)

REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
maps

RANGE: Aka, BC-Alta, ncOnt

ONTARIO: L. Superior

Map: Fernald 1925, Hultén 1968, Soper & Heimburger
1976 Ont

STATUS: Threatened in Michigan (Wagner 1976).

Opuntia compressa (Salisb.)Macbr.
(O. humifusa Raf.)

REFERENCE: Beschel 1967, CAN, Catling 1974, Kershaw
1976, Kershaw & Morton 1976

RANGE: swOnt (Boivin 1967)

ONTARIO: Pt. Pelee

STATUS: Rare in Canada.

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in New York (McGaugh & Genoways 1976,
Zander 1976).

Opuntia fragilis (Nutt.)Haw.

REFERENCE: Beschel 1967, Beschel et al. 1970, Catling
1974

RANGE: BC-Man, Ont (Boivin 1967)

ONTARIO: Rainy R. Dist. and Lennox & Addington Co.

STATUS: Endangered in Michigan (Wagner 1976).
Threatened in Wisconsin (Read 1976).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States.

Opuntia humifusa = O. compressa

35

Orobanche fasciculata Nutt.
REFERENCE: CAN
RANGE: YT, BC-Man, scOnt (Boivin 1967)
ONTARIO: Great Cloche Is.
STATUS: Endangered in Wisconsin (Read 1976). Threat-
ened in Michigan (Wagner 1976). Rare in Indiana
(Barnes 1975).

Osmorhiza chilensis H.& A.

REFERENCE: FON 1969 and maps

RANGE: Aka, BC-Sask, Ont-Nfld, local in east (Boivin
1967)

ONTARIO: Great Lakes

Map: Constance & Shan 1948, Given & Soper 1976 Ont,
Hultén 1968

STATUS: Threatened in Wisconsin (Read 1976).

Osmorhiza obtusa (Coult.& Rose)Fern.
REFERENCE: Maps
RANGE: Aka-NWT, BC-Man, ncOnt, PQ-Nfld
ONTARIO: L. Superior
Map: Constance & Shan 1948, Hultén 1968
STATUS: Rare in Minnesota and Michigan (Morley 1972,
Wagner 1976).

Oxypolis rigidior (L.)Coult.& Rose
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
Map: Soper 1962 Ont
STATUS: Rare in Canada; possibily extirpated in Ontario
(Soper 1962).

Oxytropis campestris (L.)DC. var. johannensis Fern.
(O. johannensis Fern.)
REFERENCE: Maps
RANGE: neOnt-Nfld
ONTARIO: James Bay
Map: Barneby 1952, Raymond 1950b

Oxytropis deflexa (Pall.)DC. var. foliolosa (Hook.)Barneby
(O. foliolosa Hook.)
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, BC-Alta, nOnt, PQ, Lab
ONTARIO: Hudson Bay
Map: Barneby 1952, Hultén 1968, Porsild 1964

Oxytropis foliolosa = O. deflexa var. foliolosa
Oxytropis hudsonica = O. viscida var. hudsonica
Oxytropis ixodes = O. viscida var. viscida
Oxytropis johannensis = O. campestris var. johannensis
Oxytropis splendens Dougl.

REFERENCE: Maps

RANGE: Aka-NWT, Alta-Man, nOnt

ONTARIO: Hudson Bay and L. Superior

Map: Barneby 1952, Given & Soper 1976 Ont, Hultén
1968

36

Oxytropis viscida Nutt. var. hudsonica (Greene)Barneby
(O. hudsonica (Greene)Fern.)
REFERENCE: Kershaw & Morton 1976, Moir 1958 and
maps
RANGE: NWT, nOnt-PQ
ONTARIO: Hudson and James Bays
Map: Barneby 1952, Porsild 1964, Raup 1947

Oxytropis viscida Nutt. var. viscida
(O. ixodes Butt.& Abbe)

REFERENCE: Kershaw 1976 and maps

RANGE: Aka-NWT, BC-Alta, ncOnt

ONTARIO: L. Superior

Map: Barneby 1952, Given & Soper 1976 Ont

Panax quinquefolius L.

REFERENCE: Beschel et al. 1970, IBP-CT 1974, Kershaw
1976, Kershaw & Morton 1976 and map

RANGE: sOnt-PQ (Boivin 1967)

Map: Argus 1976

STATUS: Rare in Canada. Endangered in Michigan, Illi-
nois and New Hampshire (Wagner 1976, Paulson &
Schwegman 1976, Hodgdon 1973). Endangered in
Michigan (Wagner 1976). Rare in Minnesota (Morley
1972).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in New York (McGaugh & Genoways 1976,
Zander 1976).

Panicum agrostoides = P. rigidulum

Panicum bicknellii Nash
REFERENCE: Beschel et al. 1970, Reznicek 1975-76 and
map
RANGE: sOnt-PQ (Fernald 1950)
ONTARIO: Waterloo Co. and Leeds Co.

Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

STATUS: Rare in Indiana (Barnes 1975).

Panicum calliphyllum Ashe
REFERENCE: Dore & McNeill 1976
RANGE: Ont
Map: Hitchcock & Chase 1910 US

STATUS: Rare in Canada. Threatened in Pennsylvania
(Wherry 1975).

Panicum clandestinum L.
(P. latifolium L. var. clandestinum (L.)Pursh)

REFERENCE: Map
RANGE: swOnt-PQ, NS (Boivin 1967)
ONTARIO: Norfolk Co.

Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

Panicum columbianum Scribn. var. commonsianum

(Ashe)Dore
(P. commonsianum Ashe)

REFERENCE: Kershaw 1976 and map

RANGE: swOnt

ONTARIO: Middlesex Co. and Elgin Co.

Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

STATUS: Rare in Canada; possibly alien (Dore & McNeill
1976).

Panicum commonsianum = P. columbianum var.
commonsianum

Panicum depauperatum Muhl.
REFERENCE: Map
RANGE: Man-Ont-NS (Boivin 1967)
ONTARIO: L. Superior and sOnt
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

Panicum depauperatum var. perlongum = P. perlongum

Panicum dichotomum L.
REFERENCE: Beschel et al. 1970, Kershaw 1976 and map
RANGE: sOnt (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US
STATUS: Rare in Canada.

Panicum gattingeri Nash

REFERENCE: Kershaw 1976 and map

RANGE: swOnt-swPQ (Fernald 1950)

ONTARIO: Middlesex Co

Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

STATUS: Rare in Canada; possibly alien (Dore & McNeill
1976).

Panicum lanuginosum Elliott var. praecocius (Hitchc.&

Chase)Dore
(P. praecocius Hitchc.& Chase)

REFERENCE: Map

RANGE: swOnt (Fernald 1950)

ONTARIO: Lambton Co. to Essex Co.

Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

STATUS: Rare in Canada.

Panicum latifolium var. clandestinum = P. clandestinum

Panicum leibergii (Vasey)Scribn. var. baldwinii Lepage
REFERENCE: Map
RANGE: w&neOnt (Boivin 1967)
Map: Dore & McNeill 1976 Ont
STATUS: Rare in Canada.

Panicum leibergii (Vasey)Scribn. var. leibergii
REFERENCE: Map
RANGE: Alta-swOnt (Boivin 1967)
ONTARIO: L. St. Clair
Map: Dore & McNeill 1976 Ont
STATUS: Threatened in Pennsylvania (Wherry 1975).

Panicum oligosanthes Schult.
REFERENCE: Map
RANGE: BC-sOnt (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

Panicum perlongum Nash
(P. depauperatum Muhl. var. perlongum
(Nash)Boivin)
REFERENCE: Kershaw 1976 and map
RANGE: Man-w&sOnt (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

Panicum philadelphicum Bernh.
REFERENCE: Map
RANGE: eOnt-swPQ (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

Panicum praecocius = P. lanuginosum var. praecocius

Panicum rigidulum Bosc.

(P. agrostoides Spreng.)

REFERENCE: Catling et al. 1977, Reznicek 1975-76 and
map

RANGE: BC, sOnt (Hitchcock et al. 1955-69)

Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US

STATUS: Rare in Canada; possibly alien (Dore & McNeill
1976).

Panicum sphaerocarpon Ell.
REFERENCE: Catling et al. 1977, Kershaw 1976 and map
RANGE: sOnt
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US
STATUS: Rare in Canada.

Panicum spretum Schultes
REFERENCE: Catling et al. 1977, Dore & McNeill 1976
RANGE: sOnt, sNS (Bolvin 1967)
ONTARIO: Simcoe Co. and Muskoka Dist.
Map: Hitchcock & Chase 1950 US

Panicum subvillosum Ashe
REFERENCE: Beschel et al. 1970, Dore & McNeill 1976
RANGE: Sask-PQ (Fernald 1950)
Map: Hitchcock & Chase 1950 US
STATUS: Rare in Indiana (Barnes 1975).

Parnassia kotzebuei Cham.
REFERENCE: Maps
RANGE: Aka-NWT, BC-Man, neOnt, PQ-Lab
1967)
ONTARIO: James Bay
Map: Hultén 1968, Porsild 1964, Raup 1947

(Boivin

Paronychia canadensis (L.)Wood
REFERENCE: Cody 1970, Cruise 1969 and map
RANGE: swOnt (Boivin 1967)
Map: Core 1941
STATUS: Rare in Canada; possibly extirpated in Ontario
(Cody 1970). Rare in Minnesota (Morley 1972).

37

Paspalum ciliatifolium Michx.
REFERENCE: Dore & McNeill 1976, Reznicek 1975-76
RANGE: swOnt
ONTARIO: Kent Co. and Essex Co.
Map: Hitchcock & Chase 1950 US
STATUS: Rare in Canada.

Pedicularis flammea L.
REFERENCE: Moir 1958 and maps
RANGE: NWT, Man-nOnt-PQ, Nfld-Lab (Boivin 1967)
ONTARIO: Hudson and James Bays
Map: Hultén 1958, Hultén 1968, Porsild 1964

Pedicularis lanceolata Michx.
REFERENCE: Stewart & James 1969 and map
RANGE: sMan-Ont (Boivin 1967)
Map: Pennell 1935

Pedicularis lapponica L.
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, Man-nOnt-PQ, Lab (Boivin 1967)
ONTARIO: Hudson and James Bays
Map: Hultén 1968, Hultén 1971, Porsild 1964

Pedicularis sudetica Willd. ssp. interioides Hult.
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, Man-nOnt-PQ
ONTARIO: Hudson and James Bays
Map: Hultén 1968, Hultén 1971

Pellaea atropurpurea (L.)Link

REFERENCE: Beschel et al. 1970, FON 1969, IBP-CT
1974, and maps

RANGE: BC-Alta, Sask, s&eOnt-PQ

Map: Brunton & Lafontaine 1974b Ont-PQ, Rigby &
Britton 1970 Can, Soper 1963 Ont, Tryon 1957, Tryon
1972

Status: Rare in Canada. Endangered in Wisconsin
(Read 1976). Threatened in Michigan (Wagner 1976).
Extremely rare in western New York (Clinton Herbar-
ium 1974). Rare in Minnesota (Morley 1972).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Peltandra virginica (L.)Schott & Endl.
REFERENCE: Kershaw 1976, Laking 1951 and map
RANGE: swOnt-swPQ (Boivin 1967)
ONTARIO: Oxford Co., Norfolk Co. and Niagara region
Map: Soper 1962 Ont
STATUS: Rare in Canada.

Penstemon gracilis Nutt.
REFERENCE: Reznicek 1975-76 and map
RANGE: BC-wOnt (Boivin 1967)
Map: Pennell 1935

Petalostemum candidum (Willd.)Michx.
REFERENCE: Reznicek 1975-76
RANGE: sAlta-wOnt (Boivin 1967)

Petalostemum purpureum (Vent.)Rydb.
REFERENCE: Reznicek 1975-76
RANGE: sAlta-Ont (Boivin 1967)
STATUS: Endangered in Michigan (Wagner 1976).

38

Phacelia franklinii (R.Br.)Gray
REFERENCE: Reznicek 1975-76 and maps
RANGE: Aka-NWT, BC, Alta, Sask-Man, ncOnt, local
ONTARIO: L. Superior
Map: Gillett 1960, Given & Soper 1976 Ont, Hultén 1968,
Porsild 1966

Phegopteris hexagonoptera (Michx.)Fée
(Dryopteris hexagonoptera Michx., Thelypteris
hexagonoptera (Michx.)Weath.)

REFERENCE: Britton 1976, Cruise 1969, IBP-CT 1974,
Kershaw 1976, Lafontaine 1974, Stewart & James
1969 and map

RANGE: sOnt-swPQ (Boivin 1967)

Map: Hultén 1964

STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976). Rare in Minnesota (Morley 1972).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Phleum alpinum L.

(P. commutatum Gaud.)

REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
maps

RANGE: Aka-NWT, BC-Sask, nOnt-PQ, NS, Nfld-Lab
(Boivin 1967)

ONTARIO: Hudson and James Bays

Map: Dore & McNeill 1976 Ont, Hultén 1968

Phleum commutatum = P. alpinum

Phlox pilosa L.
REFERENCE: Kershaw 1976
RANGE: swOnt (Boivin 1967)
Map: Levin & Smith 1966, Wherry 1955
STATUS: Rare in Canada.

Phlox subulata L.
REFERENCE: Map
RANGE: swOnt (Boivin 1967)
Map: Wherry 1955
STATUS: Rare in Canada.

Phyla lancolata (Michx.)Greene var. recognita (Fern.&

Griscom)Soper
(Lippia lanceolata Michx. var. recognita Fern.&
Grisc.)

REFERENCE: Kershaw 1976 and map

RANGE: swOnt (Boivin 1967)

ONTARIO: L. St. Clair and Essex Co.

Map: Soper 1962 Ont

STATUS: Rare in Canada.

Phyllitis scolopendrium (L.)Newm. var. americana Fern.
REFERENCE: Catling 1974, Faust 1969, FON 1969, Ker-
shaw 1976, Kershaw & Morton 1976, Lafontaine 1974,
Love & Love 1973 and maps

RANGE: sOnt

ONTARIO: Niagara region and Bruce Pen.

Map: Fernald 1935, Hultén 1964, Soper 1954 Ont

STATUS: Rare in Canada. Endangered in the United
States (Smithsonian Institution 1975, United States
1976). Endangered in Michigan (Wagner 1976). Ex-
tremely rare in western New York (Clinton Herbarium
1974).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Pinus rigida Mill.

REFERENCE: Beschel et al. 1970, IBP-CT 1974, Kershaw
1976, Lafontaine 1974 and maps

RANGE: seOnt-swPQ

ONTARIO: Leeds Co.

Map: Hosie 1969 Can, Little 1971, Smouse & Saylor
1973, Soper 1960 Ont, VanderKloet 1973 Ont

STATUS: Rare in Canada.

Piperia unalascensis (Spreng.)Rydb.

(Habenaria unalascensis (Spreng.)Wats.)

REFERENCE: FON 1969 and maps

RANGE: Aka-YT, BC-Alta, scOnt, PQ

ONTARIO: Bruce Pen. and Manitoulin |.

Map: Case 1964 Great Lakes, Fernald 1925, Given &
Soper 1976 Ont, Luer 1975, Soper 1960 Ont

STATUS: Threatened in Michigan (Wagner 1976).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States.

Plantago cordata Lam.
REFERENCE: Kershaw 1976 and maps
RANGE: sOnt (Boivin 1967)
Map: Bassett 1967, Bassett 1973, Tessene 1969
STATUS: Rare in Canada. Extirpated in Michigan (Wag-
ner 1976). Rare in Wisconsin and Indiana (Read
1976, Barnes 1975).

Plantago maritima L.
REFERENCE: Moir 1958 and map
RANGE: Aka, BC, Man-nOnt-Lab
ONTARIO: Hudson and James Bays
Map: Bassett 1973

Platanthera blephariglottis (Willd.)Lindl.
(Habenaria blephariglottis(Willd.)Hook.)

REFERENCE: Catling 1974, Lafontaine & White 1974 and
maps

RANGE: sOnt-Nfld

Map: Case 1964 Great Lakes, Correll 1941, Luer 1975,
Soper 1960 Ont

STATUS: Extirpated in Illinois (Paulson & Schwegman
1976). Endangered in New Hampshire (Hodgdon
1973).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in New York (McGaugh & Genoways 1976) and
Vermont (Vermont 1957, 1974)

Platanthera ciliaris (L.)Lindl.
(Habenaria ciliaris (L.)R.Br.)

REFERENCE: Brunton 1974-75, Catling & Whiting 1976,
Kershaw 1976 and maps

RANGE: swOnt

ONTARIO: Essex Co. and Walpole Is.

Map: Case 1964 Great Lakes, Luer 1975, Soper 1960
Ont

STATUS: Rare and possibly extirpated in Canada (Brun-
ton 1974-75, Catling & Whiting 1976). Threatened in
Michigan (Wagner 1976).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in New York (McGaugh & Genoways 1976) and
Vermont (Vermont 1957, 1974)

Platanthera flava (L.)Lindl. var. herbiola (R.Br.)Luer
(Habenaria flava (L.)R.Br. var. herbiola (R.Br.)Ames
& Correll

REFERENCE: Beschel et al. 1970, Brunton 1974-75 and
maps

RANGE: sOnt-NS

Map: Ayensu 1975 US, Case 1964 Great Lakes, Luer
1975, Soper 1960 Ont

STATUS: Rare in Canada. Threatened in the United
States (Ayensu 1975, Smithsonian Institution 1975).
Endangered in Illinois (Paulson & Schwegman 1976).
Threatened in Wisconsin (Read 1976). Rare in Michi-
gan (Wagner 1976).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in Minnesota, Wisconsin, New York (McGaugh
& Genoways 1976) and Vermont (Vermont 1957,
1974).

39

Platanthera leucophaea (Nutt.)Lindl.
(Habenaria leucophaea (Nutt.)Gray)

REFERENCE: Beschel et al. 1970, Catling 1974, FON 1969,
IBP-CT 1974, Kershaw 1976, Kershaw & Morton 1976
and maps

RANGE: sOnt-NB, NS (Boivin 1967)

Map: Ayensu 1975 US, Case 1964 Great Lakes, Luer
1975, Soper 1960.

STATUS: Rare in Canada. Threatened in the United
States (Ayensu 1975, Smithsonian Institution 1975).
Endangered in Wisconsin and Illinois (Read 1976,
Paulson & Schwegman 1976). Threatened in Michigan
(Wagner 1976).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in Minnesota, Wisconsin and New York
(McGaugh & Genoways 1976).

Poa alpigena (Fries)Lindm.
(P. pratensis L. var. alpigena Fries)
REFERENCE: Reznicek 1975-76 and maps
RANGE: Aka-NWT, BC, Sask-nOnt-Lab
ONTARIO: Hudson and James Bays
Map: Dore & McNeill 1976 Ont, Hultén 1964, Hultén
1968, Porsild 1964

Poa arctica R.Br.
REFERENCE: Maps
RANGE: Aka-NWT, BC-Alta, Man-nOnt-PQ, Nfld-Lab
(Boivin 1967)
ONTARIO: Hudson Bay
Map: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964

Poa canbyi (Scribn.)Howell
REFERENCE: Dore & McNeill 1976, Kershaw 1976, Ker-
shaw & Morton 1976 and maps
RANGE: Aka, BC-Man, ncOnt, PQ
ONTARIO: L. Superior
Map: Hultén 1968, Porsild 1966

Poa interior Rydb.
(P. nemoralis var. interior (Rydb.)Butt.& Abbe)
REFERENCE: Maps
RANGE: BC-nOnt-PQ (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Ramaley 1939

Poa nemoralis var. interior = P. interior
Poa pratensis var. alpigena = P. alpigena

Podostemum ceratophyllum Michx.
REFERENCE: Brunton 1974-75 and map
RANGE: eOnt-NB (Boivin 1967)

Map: Raymond 1950b

Polanisia dodecandra (L.)DC.
(P. graveolens Raf.)
REFERENCE: Beschel et al. 1970, Cruise 1969, Kershaw
1976 and map
RANGE: Sask-sOnt-swPQ (Boivin 1967)
Map: Iltis 1958

40

Polanisia graveolens = P. dodecandra

Polygala incarnata L.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
Map: Fernald 1937
STATUS: Rare in Canada. Extirpated in Pennsylvania
(Wherry 1975). Endangered in Wisconsin (Read
1976).

Polygonatum biflorum (Walt.)Ell.
(P. canaliculatum (Muhl.)Pursh)
REFERENCE: Beschel et al. 1970, Cruise 1969, Kershaw
1976 and map
RANGE: seSask-sOnt (Boivin 1967)
Map: Cruise & Haber 1972 Ont, Ownbey 1944
Status: Rare in Canada.

Polygonatum canaliculatum = P. biflorum

Polygonella articulata (L.)Meisn.
REFERENCE: Brunton 1974-75, Kershaw 1976 and map
RANGE: Ont-swPQ (Boivin 1967)
Map: Horton 1963, Soper 1960 Ont
STATUS: Rare in Canada. Rare in Indiana (Barnes 1975).

Polygonum careyi Olney
REFERENCE: Brunton 1974-75, CAN, Catling et al. 1977,
Cruise 1969
RANGE: cOnt-NB (Boivin 1967)
STATUS: Threatened in Michigan (Wagner 1976). Rare in
Indiana (Barnes 1975).

Polygonum ramosissimum Michx.
REFERENCE: Reznicek 1975-76
RANGE: BC-NS (Boivin 1967)
STATUS: Rare in Minnesota (Morley 1972).

Polygonum tenue Michx.
REFERENCE: Cruise 1969, Kershaw 1976
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada.

Polymnia canadensis L.
REFERENCE: Kershaw 1976 and map
RANGE: sOnt (Boivin 1967)
Map: Soper 1962 Ont, Wells 1969
STATUS: Rare in Canada.

Polystichum braunii (Spenner)Fée var. purshii Fern.
REFERENCE: Britton 1976, Catling 1974 and map
RANGE: ncOnt-Nfld (Fernald 1950)
ONTARIO: L. Superior
Map: Hultén 1964, Soper 1977 Ont
STATUS: Endangered in Wisconsin (Read 1976).
PROTECTION: Protected by law in New York (McGaugh &

Genoways 1976) and Vermont (Vermont 1957, 1974)

Polystichum lonchitis (L.)Roth
REFERENCE: Britton 1976, Catling 1974 and maps

RANGE: Aka-YT, BC-Alta, Ont, PQ-Nfld, local (Boivin
1967)

Map: Fernald 1935, Given & Soper 1976 Ont, Hultén
1958, Roland 1941, Soper 1954 Ont

STATUS: Extremely rare in western New York (Clinton
Herbarium 1974).

Potamogeton bicupulatus Fern.
(P. capillaceus auct.)

REFERENCE: Kershaw 1976, Reznicek 1975-76, Soper
1975-76 and map

RANGE: scOnt

ONTARIO: eGeorgian Bay

Map: Reznicek & Bobbette 1976
STATUS: Rare in Canada.

Potamogeton capillaceus = P. bicupulatus

Potamogeton confervoides Reichenb.
REFERENCE: Brunton 1974-75, Reznicek 1975-76, Soper
1975-76
RANGE: Ont-NB, NS-Lab (Boivin 1967)
Map: Fernald 1932

STATUS: Extirpated in Wisconsin (Read 1976). Threat-
ened in Michigan (Wagner 1976).

Potamogeton hillii Morong.
REFERENCE: Dale 1976, Kershaw 1976 and map
RANGE: swOnt
ONTARIO: St. Thomas
Map: Fernald 1932, Haynes 1974

STATUS: Rare in Canada. Threatened in the United
States (Smithsonian Institution 1975). Extirpated in
Ohio (Stuckey & Roberts 1976). Threatened in Michi-
gan and Pennsylvania (Wagner 1976, Wherry 1975).

Potamogeton oakesianus Robbins
REFERENCE: Brunton 1974-75, Cruise 1969, Reznicek
1975-76 and map
RANGE: Ont-Lab (Boivin 1967)
Map: Meusel et al. 1965, Ogden 1943

Potamogeton perfoliatus L. var. perfoliatus
REFERENCE: Reznicek 1975-76 and map
RANGE: cOnt-NS (Boivin 1967)

Map: Hultén 1964, Ogden 1943

Potamogeton pulcher Tuck.

REFERENCE: Kershaw 1976, Reznicek 1975-76

RANGE: swOnt, NS (Boivin 1967)

Map: Ogden 1943

STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976). Threatened in Michigan and Pennsyl-
vania (Wagner 1976, Wherry 1975). Rare in Indiana
and Ohio (Barnes 1975, Stuckey & Roberts 1976).

Potamogeton vaseyi Robbins
REFERENCE: Beschel et al. 1970, Reznicek 1975-76 and
map
RANGE: Ont-NB (Boivin 1967)
Map: Fernald 1932
STATUS: Threatened in Wisconsin, Michigan and Penn-
sylvania (Read 1976, Wagner 1976, Wherry 1975).

Potentilla gracilis Dougl.
REFERENCE: Maps
RANGE: Aka-YT, BC-nOnt-PQ, local (Boivin 1967)
ONTARIO: L. Superior and Timiskaming Dist.
Map: Given & Soper 1976 Ont, Hultén 1968

Potentilla hippiana Lehm.
REFERENCE: Map
RANGE: Aka, BC-wOnt, PQ (Boivin 1967)
Map: Hultén 1968

Potentilla paradoxa Nutt.
REFERENCE: Beschel et al. 1970, Cruise 1969
RANGE: seBC-Ont (Boivin 1967)
STATUS: Threatened in Pennsylvania (Wherry 1975).

Potentilla pensylvanica L.
REFERENCE: Brunton 1974-75, and map
RANGE: Aka-NWT, BC-nOnt-PQ (Boivin 1967)
Map: Given & Soper 1976 Ont, Hultén 1968

Potentilla pulchella R.Br.
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, Man, nOnt-PQ
ONTARIO: Hudson and James Bays
Map: Hultén 1958, Hultén 1968, Porsild 1964

Potentilla rivalis Nutt.
REFERENCE: Brayshaw 1964
RANGE: BC-wOnt (Boivin 1967)

Primula intercedens Fern.
REFERENCE: FON 1969, Krotkov 1940
RANGE: scOnt (Boivin 1967)
ONTARIO: Manitoulin |., L. Nipissing and Bruce Pen.
STATUS: Rare in Canada.

Prunus americana Marsh.
REFERENCE: Maps
RANGE: seSask-swOnt (Boivin 1967)
Map: Groh & Senn 1940 Ont-PQ, Hosie 1969 Can, Soper
& Heimburger 1976 Ont
STATUS: Rare in Canada.

Ptelea trifoliata L.
REFERENCE: Kershaw 1976, Lafontaine 1974 and maps
RANGE: swOnt-swPQ (Boivin 1967)
Map: Bailey et al. 1970, Fox & Soper 1952 Ont, Soper &
Heimburger 1961 Ont, Soper & Heimburger 1976 Ont
STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976).

41

Pterospora andromeda Nutt.

REFERENCE: Beschel et al. 1970, Cruise 1969, FON 1969
and maps

RANGE: BC-Sask, sOnt-PQ, PEI, local in east

Map: Bakshi 1959, Gillett 1972 Ont-PQ

STATUS: Endangered in Wisconsin and New Hampshire
(Read 1976, Hodgdon 1973). Threatened in Michigan
(Wagner 1976). Extremely rare in western New York
(Clinton Herbarium 1974).

Puccinellia lucida Fern.& Weath.
REFERENCE: CAN and map
RANGE: BC, Man-neOnt-NB (Fernald 1950)
ONTARIO: James Bay
Map: Dore & McNeill 1976 Ont

Puccinellia nuttalliana (Schult.)Hitchc.
REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
maps
RANGE: Aka-NWT, BC-Man, ncOnt (Boivin 1967)
ONTARIO: Lake of the Woods and Thunder Bay Dist.
Map: Dore & McNeill 1976 Ont, Hultén 1968

Pycnanthemum incanum (L.)Michx.

REFERENCE: Kershaw 1976

RANGE: swOnt (Boivin 1967)

ONTARIO: Hamilton

Map: Grant & Epling 1943

STATUS: Rare and possibly extirpated in Canada. Ex-
tremely rare in western New York (Clinton Herbarium
1974).

Pycnanthemum pilosum Nutt.
REFERENCE: Kershaw 1976, Pratt 1974 and map
RANGE: swOnt (Boivin 1967)
Map: Grant & Epling 1943
STATUS: Rare in Canada.

Pycnanthemum tenuifolium Schrader
REFERENCE: Kershaw 1976
RANGE: sOnt-swPQ (Boivin 1967)
STATUS: Rare in Canada.

Pyrola grandiflora Rad.
REFERENCE: Maps
RANGE: Aka-NWT, BC, Man-nOnt-PQ, Lab
ONTARIO: Hudson and James Bays
Map: Given & Soper 1976 Ont, Hultén 1958, Hultén
1968, Porsild 1964, Young 1971

Quercus bicolor Willd.
REFERENCE: Kershaw 1976 and maps
RANGE: sOnt-swPQ (Boivin 1967)
Map: Fox & Soper 1954 Ont, Hosie 1969 Can, Little
1971, Soper 1960 Ont
STATUS: Rare in Canada.

Quercus ellipsoidalis E.J.Hill
REFERENCE: Maycock 1976 and map
RANGE: nwOnt
Map: Little 1971, Wadmond 1933
STATUS: Rare in Canada. Rare in Indiana (Barnes 1975).

42

Quercus muehlenbergii Engelm.
REFERENCE: IBP-CT 1974, Kershaw 1976 and maps
RANGE: sOnt (Boivin 1967)
Map: Fox & Soper 1954 Ont, Hosie 1969 Can, Little
1971, Soper 1960 Ont
STATUS: Rare in Canada. Rare in Minnesota (Morley
1972).

Quercus palustris Muenchh.
REFERENCE: Kershaw 1976, Stewart & James 1969 and
maps
RANGE: swOnt (Boivin 1967)
Map: Fox & Soper 1954 Ont, Hosie 1969 Can, Little
1971, Soper 1960 Ont
STATUS: Rare in Canada.

Quercus prinoides Willd.
REFERENCE: Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)
Map: Fox & Soper 1954 Ont, Soper & Heimburger 1961
Ont, Soper & Heimburger 1976 Ont
STATUS: Rare in Canada. Rare in Indiana (Barnes 1975).

Quercus prinus L.
REFERENCE: Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)
Map: Fox & Soper 1954 Ont, Hosie 1969 Can, Little 1971
STATUS: Rare in Canada.

Ranunculus fascicularis Muhl.
REFERENCE: Brunton 1974-75, IBP-CT 1974
RANGE: seMan-sOnt (Boivin 1967)
STATUS: Rare in Canada. Endangered in New Hampshire
(Hodgdon 1973).

Ranunculus hispidus Michx. var. marilandicus
(Poir.)Benson
REFERENCE: Beschel et al. 1970, Cruise 1969, IBP-CT
1974, Kershaw 1976
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada.

Ranunculus pallasii Schlecht.
REFERENCE: Maps
RANGE: Aka-NWT, Man-nOnt-PQ, Lab
ONTARIO: Hudson and James Bays
Map: Hultén 1968, Hultén 1971, Porsild 1964

Ranunculus pedatifidus Sm. ssp. affinis (R.Br.)Hult.
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, BC-Alta, Sask, Man-nOnt-PQ, Nfld-
Lab
ONTARIO: Hudson and James Bays
Map: Hultén 1968, Hultén 1971

Ranunculus rhomboideus Goldie
REFERENCE: Beschel et al. 1970, Cruise 1969, Reznicek
1975-76
RANGE: BC-Ont, local (Boivin 1967)

Ratibida columnifera (Nutt.)Woot.& Standl.
REFERENCE: Maps
RANGE: seBC-Ont (Boivin 1967)
Map: Richards 1968, Soper 1976 Ont
STATUS: Rare in Indiana (Barnes 1975).

Ratibida pinnata (Vent.) Barnh.
REFERENCE: Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)

Map: Richards 1968, Soper 1960 Ont
STATUS: Rare in Canada.

Rhexia virginica L.

REFERENCE: Brunton 1974-75, Catling et al. 1977 and
maps

RANGE: sOnt, WNS (Boivin 1967)

ONTARIO: eGeorgian Bay to Algonquin Prov. Pk.

Map: James 1956, Kral & Bostich 1969, Soper 1956 Ont

STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976). Rare in Michigan (Wagner 1976).

Rhinanthus borealis (Sterneck)Chabert
REFERENCE: Moir 1958
RANGE: nOnt, PQ, Nfld (Fernald 1950)
ONTARIO: Hudson Bay

Rhododendron lapponicum Wahl.
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, BC, Alta, Man-nOnt-PQ, Nfld-Lab
ONTARIO: Hudson and James Bays
Map: Gillett 1971, Given & Soper 1976 Ont, Hultén 1958,
Hultén 1968, Porsild 1964

Rhus copallina L.

REFERENCE: Cruise 1969, IBP-CT 1974, Kershaw 1976
and maps

RANGE: sOnt (Boivin 1967)

Map: Barkley 1937, Soper & Heimburger 1961 Ont,
Soper & Heimburger 1976 Ont, VanderKloet 1968
Ont-NY

STATUS: Rare in Canada. Threatened in Pennsylvania
(Wherry 1975).

Rhynchospora capitellata (Michx.)Vahl
REFERENCE: Beschel et al. 1970, Catling et al. 1977, IBP-
CT 1974, Reznicek 1975-76 and maps
RANGE: sOnt-NB, NS (Boivin 1967)
Map: Gale 1944, Wood 1970, Wood 1972

Rosa setigera Michx.
REFERENCE: CAN, Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: Essex Co.
Map: Soper & Heimburger 1976 Ont
STATUS: Rare in Canada.

Sabatia angularis (L.)Pursh

REFERENCE: DAO, Gillett 1963, Kershaw 1976

RANGE: swOnt

Map: Wilbur 1955

Status: Rare in Canada. Threatened in Michigan (Wag-
ner 1976).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Sagina procumbens L.
REFERENCE: Beschel et al. 1970
RANGE: BC, Ont-NS, Nfld-Lab (Boivin 1967)
Map: Meusel et al. 1965

Sagittaria engelmanniana J.G.Smith var. brevirostra
(Mack.& Bush)Bogin
REFERENCE: Reznicek 1975-76
RANGE: swOnt (Boivin 1967)
Map: Bogin 1955
STATUS: Rare in Canada.

Sagittaria graminea Michx. var. cristata (Engelm.)Bogin
REFERENCE: Kershaw 1976 and map
RANGE: scOnt (Boivin 1967)
ONTARIO: Manitoulin Is. and Bruce Pen.
Map: Bogin 1955
STATUS: Rare in Canada. Rare in Minnesota (Morley
1972).

Salicornia europaea L.
REFERENCE: Reznicek 1975-76 and maps
RANGE: Aka-YT, BC-Man, neOnt-Nfld, local
ONTARIO: James Bay
Map: Hultén 1968, Hultén 1971

Salix arctica Pall.
REFERENCE: Argus 1974-76, Moir 1958 and maps
RANGE: Aka-NWT, BC-Alta, Man, nOnt-PQ, Nfld-Lab
ONTARIO: Hudson and James Bays
Map: Hultén 1971, Porsild 1964, Soper & Heimburger
1976 Ont

Salix arctophila Cock.
REFERENCE: Argus 1974-76, Moir 1958 and maps
RANGE: Aka-NWT, Sask-Man, nOnt-PQ, Nfld-Lab
ONTARIO: Hudson and James Bays
Map: Hultén 1968, Porsild 1964, Soper & Heimburger
1976 Ont

Salix brachycarpa Nutt. ssp. brachycarpa
REFERENCE: Argus 1974-76, Moir 1958 and maps
RANGE: BC-Sask, Man-nOnt-nPQ
ONTARIO: Hudson and James Bays
Map: Argus 1965, Raup 1943 eCan, Soper & Heimburger
1976 Ont

Salix calcicola = S. lanata ssp. calcicola

Salix lanata L. ssp. calcicola (Fern.& Wieg.)Hult.
(S. calcicola Fern.& Wieg.)
REFERENCE: Argus 1974-76, Moir 1958 and maps
RANGE: NWT, Man-nOnt-nPQ, Nfld-Lab
ONTARIO: Hudson and James Bays
Map: Hultén 1971, Porsild 1964, Soper & Heimburger
1976 Ont

Salix maccalliana Rowlee
REFERENCE: Argus 1974-76 and maps
RANGE: NWT, BC-nOnt-PQ (Boivin 1967)
Map: Raup 1959, Soper & Heimburger 1976 Ont

43

Salix reticulata L.
REFERENCE: Argus 1974-76, Moir 1958 and maps
RANGE: Aka-NWT, BC, Sask-nOnt-PQ, Nfld-Lab (Boivin
1967)
ONTARIO: Hudson and James Bays
Map: Hultén 1968, Hultén 1971, Porsild 1964, Soper &
Heimburger 1976 Ont

Salix sericea Marsh.
REFERENCE: Argus 1974-76 and map
RANGE: swOnt-NB, NS (Boivin 1967)
ONTARIO: Pt. Pelee
Map: Soper & Heimburger 1976 Ont
STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976).

Salix vestita Pursh
REFERENCE: Argus 1974-76, Moir 1958 and map
RANGE: NWT, BC-Alta, Man-nOnt-PQ, Nfld-Lab (Boivin
1967)
ONTARIO: Hudson Bay
Map: Raup 1943 eCan, Raup 1959, Soper & Heimburger
1976 Ont

Sanicula canadensis L.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
Map: Shan & Constance 1951
STATUS: Rare in Canada.

Satureja arkansana = S. glabella var. angustifolia

Satureja glabella (Michx.)Brig. var. angustifolia
(Torr.)Svens.
(S. arkansana (Nutt.)Briq.)
REFERENCE: Cruise 1969, FON 1969
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada. Endangered in Wisconsin
(Read 1976).

Saxifraga aizoides L.
REFERENCE: Soper & Maycock 1963 and maps
RANGE: YT-NWT, BC-Alta, Man-nOnt-PQ, NS-Lab
(Boivin 1967)
ONTARIO: Hudson and James Bays
Map: Given & Soper 1976 Ont, Hultén 1958, Porsild
1964, Raup 1947

Saxifraga caespitosa L.
REFERENCE: Moir 1958 and maps
RANGE: Aka-NWT, BC-Alta, Man-nOnt-PQ, Nfld-Lab
(Boivin 1967)
ONTARIO: Hudson Bay
Map: Hultén 1958, Hultén 1968

Saxifraga cernua L.

REFERENCE: CAN, Kershaw 1976, Kershaw & Morton
1976, Moir 1958

RANGE: Aka, BC-Alta, nwOnt, PQ, Lab (Boivin 1967)

ONTARIO: Hudson Bay

Map: Porsild 1964

Status: Endangered in New Hampshire (Hodgdon
1973).

44

Saxifraga pensylvanica L.
REFERENCE: DAO, Kershaw 1976, Looman 1973
RANGE: Man-Ont (Boivin 1967)
Map: Burns 1942
STATUS: Rare in Canada.

Scirpus clintonii Gray
REFERENCE: Reznicek 1975-76
RANGE: Alta-Sask, Ont-NB (Boivin 1967)
Map: Lepage 1969 PQ

Scirpus heterochaetus Chase
REFERENCE: DAO, Kershaw 1976
RANGE: sMan, eOnt-swPQ (Fernald 1950)
ONTARIO: Ingleside
STATUS: Rare in Canada. Threatened in Pennsylvania
(Wherry 1975).

Scirpus maritimus L. var. paludosus (Nels.)Kukenth.
(S. paludosus Nels.)
REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
map
RANGE: Aka-NWT, BC-neOnt-NS (Boivin 1967)
ONTARIO: James Bay
Map: Hultén 1968

Scirpus micranthus = Hemicarpha micrantha
Scirpus paludosus = S. maritimus var. paludosus

Scirpus smithii Gray
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: Ont-sPQ (Boivin 1967)
STATUS: Rare in Canada. Threatened in Pennsylvania
(Wherry 1975).

Scirpus torreyi Olney
REFERENCE: Reznicek 1975-76
RANGE: Ont-NB (Boivin 1967)
STATUS: Rare in Canada. Extirpated in Illinois (Paulson
& Schwegman 1976). Rare in Michigan and Indiana
(Wagner 1976, Barnes 1975).

Scirpus verecundus Fern.
REFERENCE: Kershaw 1976, Reznicek 1975-76
RANGE: sOnt
STATUS: Rare in Canada.

Scleria triglomerata Michx.
REFERENCE: Kershaw 1976, Reznicek 1975-76, and map
RANGE: swOnt (Boivin 1967)
Map: Fairey 1967 seUS, Soper 1962 Ont
STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976). Rare in Minnesota (Morley 1972).

Scleria verticillata Muhl.

REFERENCE: Beschel et al. 1970, FON 1969, Kershaw
1976, Reznicek 1975-76 and map

RANGE: sOnt (Boivin 1967)

Map: Soper 1962 Ont

STATUS: Rare in Canada. Threatened in Wisconsin and
Pennsylvania (Read 1976, Wherry 1975). Rare in Min-
nesota (Morley 1972).

Scutellaria nervosa Pursh var. calvifolia Fern.
REFERENCE: CAN, Kershaw 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Kingsville
STATUS: Rare in Canada; possibly extirpated in Ontario
(Scoggan 1976).

Senecio glabellus Poir.
REFERENCE: Campbell & Reznicek 1976, CAN, Kershaw
1976
RANGE: swOnt
ONTARIO: Pelee Is.
STATUS: Rare in Canada.

Senecio obovatus Muhl.
REFERENCE: DAO, FON 1969, Kershaw 1976 and map
RANGE: scOnt-sPQ (Fernald 1950)
ONTARIO: Bruce Pen.
Map: Barkley 1962
STATUS: Rare in Canada.

Silene virginica L.
REFERENCE: Kershaw 1976, Scoggan 1976
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada; possibly extirpated in Ontario
(Scoggan 1976).

Silphium perfoliatum L.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt-swPQ (Boivin 1967)
Map: Soper 1962 Ont
Status: Rare in Canada. Threatened in Michigan (Wag-
ner 1976).

Silphium terebinthinaceum Jacq.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)

Map: Soper 1962 Ont
STATUS: Rare in Canada.

Sisyrinchium albidum Raf.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: Windsor
Map: Marchand & Grear 1975 Ont
STATUS: Rare in Canada.

Smilax ecirrhata (Engelm.)Wats.
REFERENCE: Cruise 1969, Kershaw 1976
RANGE: swOnt (Boivin 1967)

Map: Mangaly 1968 US
STATUS: Rare in Canada.

Smilax illinoensis Mangaly
REFERENCE: Campbell & Reznicek 1976, Kershaw 1976
RANGE: Ont
Map: Mangaly 1968 US
STATUS: Rare in Canada.

Smilax lasioneuron Hook.
REFERENCE: Cruise 1969
RANGE: Sask-swOnt (Boivin 1967)
Map: Mangaly 1968 US

Smilax rotundifolia L.

REFERENCE: Cruise 1969, Kershaw 1976 and maps

RANGE: swOnt, NS (Boivin 1967)

ONTARIO: Pt. Pelee and Leamington

Map: Duncan 1967 seUS, Soper & Heimburger 1961
Ont, Soper & Heimburger 1976 Ont

STATUS: Rare and possibly extirpated in Canada (Soper
& Heimburger 1976).

Solidago arguta Ait.
REFERENCE: Beschel et al. 1970, Kershaw 1976, Stewart
& James 1969
RANGE: Ont (Boivin 1967)
Status: Rare in Canada.

Solidago houghtonii T.& G.

REFERENCE: CAN, Kershaw 1976, Kershaw & Morton
1976, Reznicek 1975-76 and maps

RANGE: scOnt

ONTARIO: Manitoulin |. and Bruce Pen.

Map: Given & Soper 1976 Ont, Guire & Voss 1963 Great
Lakes

STATUS: Rare in Canada. Threatened in Michigan (Wag-
ner 1976).

Solidago jejunifolia Steele
(S. uliginosa Nutt. var. jejunifolia (Steele)Boivin)
REFERENCE: Boivin 1967
RANGE: scOnt
ONTARIO: Bruce Pen.
STATUS: Rare in Canada.

Solidago missouriensis Nutt.
REFERENCE: Cruise 1969 and map
RANGE: BC-wOnt, local (Boivin 1967)
MAP: Given & Soper 1976 Ont

Solidago ohioensis Riddell
REFERENCE: Cruise 1969, FON 1969, Krotkov 1940
RANGE: sOnt (Boivin 1967)
ONTARIO: Bruce Pen.-swOnt
STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976).

Solidago patula Muhl.
REFERENCE: Cruise 1969
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada.

Solidago puberula Nutt.
REFERENCE: Beschel et al. 1970, Lafontaine & White
1974
RANGE: eOnt-NS (Boivin 1967)

Solidago riddellii Frank
REFERENCE: Reznicek 1975-76
RANGE: seMan-Ont (Boivin 1967)

Solidago rigida L. var. rigida
REFERENCE: Reznicek 1975-76
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada.

45

Solidago sciaphila Steele
REFERENCE: Kershaw 1976
RANGE: scOnt (Boivin 1967)
ONTARIO: Georgian Bay
STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976).

Solidago speciosa Nutt. var. angustata T.& G.
REFERENCE: Kershaw 1976
RANGE: swOnt (Boivin 1967)
ONTARIO: Lambton Co.
STATUS: Rare in Canada.

Solidago uliginosa var. jejunifolia = S. jejunifolia

Solidago ulmifolia Nutt.
REFERENCE: Kershaw 1976
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada.

Sparganium androcladum (Engelm.)Morong
REFERENCE: CAN, Kershaw 1976 and map
RANGE: swOnt-NS
Map: Beal 1960
STATUS: Rare in Canada. Threatened in Pennsylvania
(Wherry 1975). Rare in Michigan and Indiana (Wag-
ner 1976, Barnes 1975).

Sparganium multipedunculatum (Morong)Rydb.
REFERENCE: FON 1969, Krotkov 1940 and map
RANGE: Aka-NWT, BC-scOnt-Nfld (Boivin 1967)
ONTARIO: Bruce Pen.

Map: Hultén 1964

Specularia perfoliata (L.)A.DC.
REFERENCE: Reznicek 1975-76
RANGE: BC, sOnt-sPQ (Boivin 1967)

Sphenopholis nitida (Biehler)Scribn.
REFERENCE: Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)
ONTARIO: Hamilton and Niagara Falls
Map: Dore & McNeill 1976 Ont, Erdman 1965
STATUS: Rare in Canada.

Sphenopholis obtusata (Michx.)Scribn.
REFERENCE: Dore & McNeill 1976 and map
RANGE: BC-Ont (Boivin 1967)

Map: Erdman 1965

Spiranthes lacera Raf. var. gracilis (Bigel.)Luer

REFERENCE: Catling 1976b and map

RANGE: sOnt

Map: Luer 1975

Status: Extremely rare in western New York (Clinton
Herbarium 1974).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in New York (McGaugh & Genoways 1976) and
Vermont (Vermont 1957, 1974)

46

Spiranthes lucida (H.H.Eat.)Ames

REFERENCE: Beschel et al. 1970, Cruise 1969, FON 1969,
IBP-CT 1974 and maps

RANGE: sOnt-NS

Map: Case 1964 Great Lakes, Catling & McKay 1973
Ont, Luer 1975.

STATUS: Rare in Michigan (Wagner 1976).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in Wisconsin, New York (McGaugh & Genoways
1976) and Vermont (Vermont 1957, 1974).

Spiranthes magnicamporum Sheviak

REFERENCE: Maps

RANGE: swOnt

Map: Catling 1976a, Luer 1975

STATUS: Rare in Canada.

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in Minnesota and Wisconsin (McGaugh &
Genoways 1976).

Spiranthes ochroleuca Rydb.

REFERENCE: Catling 1976b, and map

RANGE: s&eOnt-PQ, NS-Nfld

Map: Luer 1975

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in New York (McGaugh & Genoways 1976) and
Vermont (Vermont 1957, 1974)

Sporobolus asper (Michx.)Kunth
REFERENCE: Dore & McNeill 1976, Dore 1975, Kershaw
1976
RANGE: Ont-NB (Boivin 1967)
Map: Hitchcock & Chase 1950 US
STATUS: Rare in Canada.

Sporobolus heterolepis Gray

REFERENCE: Beschel et al. 1970, Dore 1959, FON 1969,
Krotkov 1940 and map

RANGE: Sask-Ont-swPQ (Boivin 1967)

ONTARIO: Georgian Bay to eOnt, local

Map: Dore & McNeill 1976 Ont

STATUS: Rare in Canada. Threatened in Michigan and
Pennsylvania (Wagner 1976, Wherry 1975). Rare in
Indiana (Barnes 1975).

Sporobolus vaginiflorus (Torr.)A.Wood var. ozarkanus
(Fern.)Shinners
REFERENCE: Map
RANGE: seOnt
ONTARIO: L. Ontario
Map: Dore & McNeill 1976 Ont
STATUS: Rare in Canada.

Sporobolus vaginiflorus (Torr.)A.Wood var. vaginiflorus
REFERENCE: Map
RANGE: sOnt-NS (Boivin 1967)
ONTARIO: Gray Co. and Carleton Co.
Map: Dore & McNeill 1976 Ont

Strophostyles helvola (L.)EIl.
REFERENCE: Kershaw 1976, Stewart & James 1969 and
map
RANGE: sOnt-swPQ (Boivin 1967)
Map: Soper 1960 Ont
STATUS: Rare in Canada. Rare in Michigan (Wagner
1976).

Stylophorum diphyllum (Michx.)Nutt.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: London and St. Marys
Map: Soper 1962 Ont
STATUS: Rare in Canada; possibily extirpated in Ontario
(Soper 1962).

Subularia aquatica L. ssp. americana Mulligan & Calder
REFERENCE: Brunton 1974-75 and map
RANGE: Aka-NWT, BC, Sask-Ont-PQ, NS-Lab
ONTARIO: wOnt to Georgian Bay
Map: Mulligan & Calder 1964
STATUS: Rare in Minnesota (Morley 1972). Threatened
in Michigan (Wagner 1976).

Swertia caroliniensis (Walt.)Ktze.
(Frasera caroliniensis Walt.)
REFERENCE: Catling 1974, Kershaw 1976 and maps
RANGE: swOnt (Boivin 1967)
Map: Gillett 1963, Soper 1962 Ont
STATUS: Rare in Canada. Rare in Michigan (Wagner
1976).

Tanacetum huronense Nutt.

(Chrysanthemum bipinnatum L. ssp. huronense
(Nutt. )Hult.)

REFERENCE: Maps

RANGE: Aka-NWT, Alta, Man-nOnt-PQ, NB-Nfld (Boivin
1967)

ONTARIO: Hudson and James Bays and L. Superior

MAP: Given & Soper 1976 Ont, Guire & Voss 1963 Great
Lakes, Hultén 1968, Hultén 1971

STATUS: Endangered in Wisconsin (Read 1976). Threat-
ened in Michigan (Wagner 1976).

Tephrosia virginiana (L.)Pers.

REFERENCE: Cruise 1969, IBP-CT 1974, Kershaw 1976
and maps

RANGE: swOnt (Boivin 1967)

ONTARIO: Norfolk Co.

Map: Soper 1962 Ont, Wood 1949

STATUS: Rare in Canada. Rare in Minnesota (Morley
1972).

Thalictrum revolutum DC.
REFERENCE: Cruise 1969, Kershaw 1976
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada. Threatened in Wisconsin
(Read 1976).

Thalictrum sparsiflorum Turcz.

REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
map

RANGE: Aka-NWT, BC-neOnt (Boivin 1967)
ONTARIO: James Bay
Map: Hultén 1968

Thalictrum thalictroides = Anemonella thalictroides

Thaspium barbinode (Michx.)Nutt.
REFERENCE: Cruise 1969, Kershaw 1976
RANGE: swOnt (Boivin 1967)

STATUS: Rare in Canada. Possibly extirpated in Wiscon-
sin (Read 1976).

Thelypteris hexagonoptera = Phegopteris hexagonoptera

Tilia heterophylla Vent.
REFERENCE: CAN, Kershaw 1976 and map
RANGE: seOnt
ONTARIO: Main Duck Is. and Leeds Co.
Map: Jones 1968, Little 1971
STATUS: Rare in Canada.

Tofieldia pusilla (Michx.)Pers.

REFERENCE: Kershaw 1976, Kershaw & Morton 1976,
Moir 1958 and maps

RANGE: Aka-NWT, BC-Man, nOnt-PQ, Nfld-Lab
ONTARIO: Hudson and James Bays, disjunct L. Superior

Map: Given & Soper 1976 Ont, Hultén 1964, Hultén
1968, Porsild 1964

Tradescantia ohioensis Raf.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt (Boivin 1967)
ONTARIO: Detroit R. and L. St. Clair
Map: Anderson 1954, Soper 1960 Ont
STATUS: Rare in Canada.

Trichostema dichotomum L.
REFERENCE: Kershaw 1976, Montgomery & Morton 1973
RANGE: swOnt
ONTARIO: Norfolk Co.
Map: Lewis 1945

STATUS: Rare in Canada. Threatened in Michigan (Wag-

ner 1976).

Triosteum angustifolium L.
REFERENCE: Kershaw 1976 and map
RANGE: swOnt
ONTARIO: Pelee Is.

Map: Duncan 1973
STATUS: Rare in Canada.

47

Triphora trianthophora (Sw.)Rydb.

REFERENCE: Catling & Whiting 1976, IBP-CT 1974, Ker-
shaw 1976, Lafontaine 1974, Pratt 1974, Zavitz &
Gaiser 1956 and maps

RANGE: swOnt

ONTARIO: Leamington and Rondeau Prov. Pk.

Map: Case 1964 Great Lakes, Luer 1975, Soper 1962
Ont

STATUS: Rare in Canada; endangered in Ontario (Catling
& Whiting 1976). Endangered in Wisconsin (Read
1976). Threatened in Michigan (Wagner 1976). Ex-
tremely rare in western New York (Clinton Herbarium
1974).

PROTECTION: An export permit is required under the
International Convention on Trade in Endangered
Species of Wild Fauna and Flora (Canada 1973, 1975)
ratified by Canada and the United States. Protected
by law in Wisconsin, New York (McGaugh & Genoways
1976) and Vermont (Vermont 1957, 1974).

Triplasis purpurea (Walt.)Chapman
REFERENCE: Cruise 1969, Kershaw 1976, Stewart &
James 1969 and maps
RANGE: swOnt (Boivin 1967)
Map: Dore & McNeill 1976 Ont, Hitchcock & Chase 1950
US, Soper 1962 Ont

STATUS: Threatened in Pennsylvania (Wherry 1975).
Rare in Minnesota, Michigan and Indiana (Morley
1972, Wagner 1976, Barnes 1975).

Trisetum spicatum ssp. molle = T. triflorum ssp. molle

Trisetum spicatum var. pilosiglume = T. triflorum ssp.
molle

Trisetum spicatum (L.)Richter ssp. spicatum
REFERENCE: Maps
RANGE: Aka-NWT, BC-nOnt-Lab (Boivin 1967)
ONTARIO: Hudson and James Bays

Map: Dore & McNeill 1976 Ont, Hultén 1964, Hultén
1968, Porsild 1964, Raup 1947

Trisetum triflorum (Bigel.)A.& D.Lôve ssp. molle

(Hult.)A.& D.L6ve
(T. spicatum (L.) Richter ssp. molle (Michx.)Hult., T.
spicatum var. pilosiglume Fern.)

REFERENCE: Dore 1959 and maps :

RANGE: Aka-NWT, BC-nOnt-PQ, NS, Nfld-Lab (Roland
& Smith 1963-69)

ONTARIO: Hudson and James Bays, disjunct L. Superior

Map: Dore & McNeill 1976 Ont, Hultén 1964, Soper &
Maycock 1963 Ont

Utricularia geminiscapa Beni.
REFERENCE: CAN, Lafontaine & White 1974
RANGE: eOnt-Nfld (Boivin 1967)
ONTARIO: Ottawa Dist.
Map: Fernald 1933
STATUS: Threatened in Wisconsin (Read 1976).

48

Uvularia perfoliata L.

REFERENCE: Catling 1974, Cruise 1969, Kershaw 1976
and maps

RANGE: swOnt (Boivin 1967)

ONTARIO: Niagara region and Hamilton

Map: Anderson & Whitaker 1934, Soper 1952 Ont, Wil-
bur 1963

STATUS: Rare in Canada. Endangered in New Hampshire
(Hodgdon 1973). Extremely rare in western New York
(Clinton Herbarium 1974).

Vaccinium ovalifolium Sm.
REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
maps
RANGE: Aka-YT, BC, ncOnt-PQ, NS-Lab (Boivin 1967)
ONTARIO: L. Superior
Map: Fernald 1925, Given & Soper 1976 Ont, Hultén
1968, Soper & Heimburger 1976 Ont

Vaccinium pallidum Ait.
(V. vacillans auct.)
REFERENCE: Kershaw 1976 and maps
RANGE: swOnt, wNS (Boivin 1967)
Map: Soper & Heimburger 1961 Ont, Soper & Heim-
burger 1976 Ont
STATUS: Rare in Canada.

Vaccinium stamineum L.
REFERENCE: Beschel et al. 1970, IBP-CT 1974, Kershaw
1976 and maps
RANGE: sOnt (Boivin 1967)
Map: Soper & Heimburger 1961 Ont, Soper & Heim-
burger 1976 Ont
STATUS: Rare in Canada.

Vaccinium vacillans = V. pallidum
Valeriana ciliata = V. edulis var. ciliata

Valeriana edulis Nutt. var. ciliata (T.& G.)Crong.
(V. ciliata T.& G.)
REFERENCE: Maps
RANGE: swOnt (Boivin 1967)
Map: Meyer 1951, Soper 1976 Ont
STATUS: Rare in Canada. Rare in Michigan and Indiana
(Wagner 1976, Barnes 1975).

Valeriana uliginosa T.& G.
REFERENCE: Beschel et al. 1970
RANGE: Ont-NB (Boivin 1967)
STATUS: Endangered in Wisconsin (Read 1976).

Valerianella chenopodifolia (Pursh)DC.

REFERENCE: Kershaw 1976 and maps

RANGE: swOnt (Boivin 1967)

ONTARIO: Elgin Co. and Welland Co.

Map: Soper 1962 Ont

STATUS: Rare in Canada; possibily extirpated in Ontario
(Soper 1962). Threatened in Michigan (Wagner 1976).
Rare in Indiana (Barnes 1975).

Valerianella intermedia Dyal
REFERENCE: Kershaw 1976 and map
RANGE: swOnt
ONTARIO: Pelee Is.
Map: Duncan 1973
STATUS: Rare in Canada. Extirpated in Illinois (Paulson
& Schwegman 1976).

Valerianella umbilicata (Sulliv.) Wood
REFERENCE: Kershaw 1976 and map
RANGE: swOnt
ONTARIO: Pelee Is.
Map: Duncan 1973
STATUS: Rare in Canada. Extirpated in Illinois (Paulson
& Schwegman 1976).

Verbena bracteata Lag.& Rodr.
REFERENCE: Map
RANGE: BC-sOnt (Boivin 1967)
Map: Moldenke 1962 US, Soper 1976 Ont

Vernonia altissima Nutt.
REFERENCE: Cruise 1969, Kershaw 1976
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada.

Vernonia missurica Raf.
REFERENCE: CAN, Kershaw 1976
RANGE: swOnt (Fernald 1950
ONTARIO: Lambton Co. and Kent Co.
Map: Faust 1972
STATUS: Rare in Canada.

Veronicastrum virginicum (L.)Farw.
REFERENCE: Beschel et al. 1970 and maps
RANGE: sMan-Ont (Boivin 1967)
Map: Pennell 1935, Soper 1976 Ont
STATUS: Extremely rare in western New York (Clinton
Herbarium 1974).

Viburnum dentatum L. var. lucidum Ait.
(V. recognitum Fern.)
REFERENCE: Beschel et al. 1970, Cruise 1969, IBP-CT
1974, Kershaw 1976 and maps
RANGE: sOnt, swNB (Boivin 1967)
Map: Soper & Heimburger 1961 Ont, Soper & Heim-
burger 1976 Ont

Viburnum recognitum = V. dentatum var. lucidum

Vicia caroliniana Walt.
REFERENCE: Beschel et al. 1970, Kershaw 1976
RANGE: sOnt (Boivin 1967)
STATUS: Rare in Canada.

Viola epipsila Ledeb. ssp. repens (Turcz.) Becker
REFERENCE: Kershaw 1976, Kershaw & Morton 1976 and
maps
RANGE: Aka-NWT, BC-Man, ncOnt
ONTARIO: L. Superior
Map: Given & Soper 1976 Ont, Hultén 1958, Hultén 1968

Viola novae-angliae House
REFERENCE: CAN, Kershaw 1976
RANGE: SMan-nwOnt-NB (Gleason 1952)
Map: Russell 1965 US
STATUS: Rare in Canada. Possibly extirpated in Wiscon-
sin (Read 1976). Threatened in Michigan (Wagner
1976).

Viola palmata L.
REFERENCE: Kershaw 1976, Stewart & James 1969
RANGE: swOnt (Boivin 1967)
Map: Russell 1965 US
STATUS: Rare in Canada. Endangered in New Hampshire
(Hodgdon 1973). Threatened in Michigan (Wagner
1976).

Viola pedata L. var. lineariloba DC.
REFERENCE: Catling 1974, Cruise 1969, IBP-CT 1974,
Kershaw 1976
RANGE: swOnt (Boivin 1967)
STATUS: Rare in Canada.
PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976, Zander 1976).

Viola rotundifolia Michx.
REFERENCE: Kershaw 1976 and maps
RANGE: swOnt-swPQ (Boivin 1967)
ONTARIO: Niagara region
Map: Bouchard & Maycock 1970, Russell 1954
STATUS: Rare in Canada.

Viola sagittata Ait.
REFERENCE: Beschel et al. 1970, Cruise 1969, Kershaw
1976 and map
RANGE: Ont-PQ (Boivin 1967)
Map: Russell 1965 US, Russell & Risser 1960
STATUS: Rare in Canada.

Viola striata Ait.
REFERENCE: Kershaw 1976, Stewart & James 1969
RANGE: sOnt (Boivin 1967)
Map: Russell 1965 US
STATUS: Rare in Canada. Extirpated in Wisconsin (Read
1976).

Viola triloba Schwein.
REFERENCE: Cruise 1969, OAC
RANGE: swOnt (Boivin 1967)
ONTARIO: Turkey Pt.

Map: Russell 1965 US
STATUS: Rare in Canada.

Vitis aestivalis Michx.
REFERENCE: Beschel et al. 1970, Cruise 1969, Kershaw
1976 and map
RANGE: swOnt (Boivin 1967)
Map: Soper & Heimburger 1976 Ont
STATUS: Rare in Canada.

49

Woodsia alpina (Bolton)S.F.Gray

REFERENCE: Britton 1976, Brunton 1974-75, Catling
1975, Kershaw 1976, Kershaw & Morton 1976,
Reznicek 1975-76 and maps

RANGE: Aka-NWT, Alta-Ont-Lab (Boivin 1967)

Map: Given & Soper 1976 Ont, Hultén 1958, Hultén
1968, Porsild 1964, Soper & Maycock 1963 Ont

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Woodsia glabella R.Br.

REFERENCE: Britton 1976, Brunton 1974-75, Reznicek
1975-76, Soper & Maycock 1963 and maps

RANGE: Aka-NWT, BC-ncOnt-Lab (Boivin 1967)

ONTARIO: L. Superior

Map: Hultén 1964, Hultén 1968, Porsild 1964

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Woodsia obtusa (Spreng.)Torr.

REFERENCE: Britton 1976, Britton 1977, Brunton 1974-
75, Gillett 1975-76

RANGE: seOnt-swPQ (Boivin 1967)

ONTARIO: Frontenac Co. and Leeds Co.

STATUS: Rare in Canada. Threatened in Michigan (Wag-
ner 1976).

PROTECTION: Protected by law in New York (McGaugh &
Genoways 1976).

Woodsia oregana D.C.Eat.
REFERENCE: Britton 1976, Brunton 1974-75, FON 1969,
Lafontaine & White 1974 and maps
RANGE: BC-Sask, Ont-PQ (Boivin 1967)
Map: Fernald 1925, Given & Soper 1976 Ont
Status: Endangered in Wisconsin (Read 1976).

Woodsia scopulina D.C.Eat.

REFERENCE: Britton 1976, Brunton 1974-75, IBP-CT
1974, Kershaw 1976, Kershaw & Morton 1976,
Reznicek 1972 and maps

RANGE: Aka-NWT, BC-Alta, Ont

ONTARIO: L. Superior and Georgian Bay

Map: Fernald 1925, Hultén 1968

Xyris caroliniana Walt.
(X. difformis Chapm.)
REFERENCE: Catling et al. 1977, IBP-CT 1974 and map
RANGE: Ont, NS (Boivin 1967)
Map: Kral 1966, Soper 1960 Ont
STATUS: Rare in Indiana (Barnes 1975).

Xyris difformis = X. caroliniana

Zannichellia palustris L.

REFERENCE: Beschel et al. 1970 and maps

RANGE: Aka, BC-Man, Ont-PQ, NB-Nfld (Boivin 1967)

ONTARIO: James Bay and eOnt

Map: Hultén 1964, Hultén 1968, Steyermark 1941

STATUS: Rare in Indiana (Barnes 1975). Endangered in
Wisconsin and New Hampshire (Read 1976, Hodgdon
1973). Threatened in Michigan (Wagner 1976). Rare
in Minnesota (Morley 1972).

50

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58

Appendix |
Unverified Reports

Amelanchier canadensis (L.) Medic.

Antennaria brainerdii Fern.

Aristida intermedia Scribn.& Ball

Asclepias longifolia Michx.

Baptisia leucantha T.& G.

Botrychium boreale (E. Fries)Milde

Bidens laevis (L.)BSP.

Braya purpurascens (R.Br.)Bunge

Cardamine rotundifolia Michx.

Carex alata T.& G.

Carex howei Mack.

Carex hyalinolepis Steud.

Carex retroflexa Muhl.

Carya tomentosa Nutt.

Ceratophyllum echinatum Gray

Cynoglossum virginianum L.

Cyperus ovularis (Michx.)Torr.

Cypripedium calceolus L. var. planipe-
talum (Fern.)Vict.& Rousseau

Cuscuta compacta Juss.
Dichromena colorata (L.)Hitchc.
Epilobium alpinum L.

Lindernia anagallidea (Michx.)Pennell
Luzula pallescens (Wahl.)Bess.
Lycopus rubellus Moench

Lycopus virginicus L.

Panicum commutatum Shultes
Pellaea densa (Brack.)Hook.
Penstemon calycosus Small
Polygonum cristatum Engelm.& Gray
Quercus coccinea Muenchh.
Ranunculus micranthus Nutt.
Senecio pseudaureus Rydb.

Silene stellata (L.)Ait.f.

Silphium trifoliatum L.

Utricularia biflora Lam.

Viola latiuscula Greene

Appendix II
Alien or Doubtfully Native Plants

Alnus glutinosa (L.)Gaertner

Amorpha fruticosa L. var. angustifolia
Pursh

Baptisia leucantha T.& G.

Dactylorhiza maculata (L.)So6

Delphinium brownii Rydb.

Eragrostis spectabilis (Pursh)Steud.

Helianthus hirsutus Raf.

Leptoloma cognatum (Schultes)Chase

Mirabilis nyctaginea (Michx.)MacM.

Oenothera laciniata Hill

Potentilla reptans L.

Pycnanthemum verticillatum
(Michx.)Pers.

Rudbeckia triloba L.

Salvia pratensis L.

Sedum hispanicum L.

Sedum telephioides Michx.

Sedum ternatum Michx.

Silphium laciniatum L.

Solanum caroliniense L.

Spartina patens (Ait.)Muhl.

Stipa avenacea L.

Appendix III

List of the Rare Vascular Plants of Ontario in Taxonomic Sequence

ISOETACEAE

Isoetes lacustris var. macrospora
|. macrospora

OPHIOGLOSSACEAE

B. lanceolatum var.
angustisegmentum

POLYPODIACEAE

Asplenium cryptolepis

A. platyneuron

A. ruta-muraria ssp. cryptolepis

A. viride

Athyrium pycnocarpon

Cryptogramma crispa var.
acrostichoides

Cystopteris fragilis var. laurentiana

C. montana

Dryopteris filix-mas

D. goldiana

Dryopteris hexagonoptera

Dryopteris robertiana

Gymnocarpium robertianum

Pellaea atropurpurea

Phegopteris hexagonoptera

Phyllitis scolopendrium var.
americana

Polystichum braunii var. purshii

P. lonchitis

Thelypteris hexagonoptera

Woodsia alpina

W. glabella

W. obtusa

W. oregana

W. scopulina

SALVINIACEAE
Azolla caroliniana

PINACEAE
Pinus rigida
SPARGANIACEAE

Sparganium androcladum
S. multipedunculatum

POTAMOGETONACEAE

Potamogeton bicupulatus

P. capillaceus

P. confervoides

P. hillii

P. oakesianus

P. perfoliatus var. perfoliatus
P. pulcher

P. vaseyi

Zannichellia palustris

NAJADACEAE
Najas gracillima
N. guadalupensis

ALISMATACEAE

Sagittaria engelmanniana var.
brevirostra
S. graminea var. cristata

HYDROCHARITACEAE
Elodea nuttallii

GRAMINEAE

Agropyron boreale ssp. boreale
A. dasystachyum var. psammophilum
A. latiglume

A. psammophilum
Alopecurus alpinus
Arctagrostis latifolia
Arctophila fulva
Aristida basiramea

A. dichotoma

A. longespica

A. necopina

A. purpurascens
Bouteloua curtipendula
Bromus pubescens

B. pumpellianus

B. purgans
Calamagrostis lacustris
C. purpurascens
Calamovilfa longifolia var. longifolia
C. longifolia var. magna
Catabrosa aquatica
Cenchrus longispinus
C. pauciflorus

Cinna arundinacea
Colpodium fulvum
Danthonia compressa
Danthonia sericea
Deschampsia cespitosa var. maritima
Dupontia fisheri
Echinochloa walteri
Elymus diversiglumis

E. glaucus

E. interruptus

E. mollis

E. riparius

E. villosus

Eragrostis hypnoides
Festuca baffinensis

. brachyphylla

. occidentalis

. rubra var. altaica

. rubra var. arenaria

. rubra var. juncea

. rubra var. rubra

. scabrella

Glyceria melicaria
Hierochloe pauciflora
Koeleria cristata

K. gracilis

K. macrantha

K. pyramidata

aubantentan anna

Melica smithii

Muhlenbergia racemosa

M. schreberi

M. sylvatica

M. tenuiflora

Panicum agrostoides

. bicknellii

. calliphyllum

. clandestinum

columbianum var. commonsianum
commonsianum
depauperatum
depauperatum var. perlongum
dichotomum

gattingeri

lanuginosum var. praecocius
. latifolium var. clandestinum
. leibergii var. leibergii

. leibergii var. baldwinii
oligosanthes

perlongum

. philadelphicum

. praecocius

. rigidulum

. Sphaerocarpon

. Spretum

. Subvillosum

Paspalum ciliatifolium

Phleum alpinum

P. commutatum

Poa alpigena

P. arctica

P. canbyi

P. interior

P. nemoralis var. interior

P. pratensis Var. alpigena
Puccinellia lucida

P. nuttalliana

Sphenopholis nitida

S. obtusata

Sporobolus asper

S. heterolepis

S. vaginiflorus var. ozarkanus
S. vaginiflorus var. vaginiflorus
Triplasis purpurea

Trisetum spicatum ssp. molle
Trisetum spicatum var. pilosiglume
T. spicatum var. spicatum

T. triflorum ssp. molle

CYPERACEAE

Bulbostylis capillaris
Carex amblyorhyncha

. amphibola var. turgida
atrata

. atrofusca

. careyana

. conoidea

. davisii

. folliculata

NDNONONONO

59

60

. formosa

. frankii

. gravida

grisea

haydenii

. heleonastes

. hirsutella

. hookerana

jamesii
katahdinensis

. laevivaginata
laxiculmis

. laxiflora var. gracillima
. leavenworthii

. lupuliformis

miliaris

. muskingumensis
nigra

. novae-angliae

. oligocarpa

prasina

. richardsonii

rossil

. Saxatilis var. miliaris
. schweinitzii

. shortiana

squarrosa

. Supina ssp. spaniocarpa
swanii

tetanica var. woodii
torta

. trichocarpa

. typhina

. virescens

. Willdenowii

. woodii

Cyperus engelmannii
C. erythrorhizos

C. ferruginescens

C. houghtonii
Eleocharis equisetoides
. geniculata

. intermedia

. olivacea

. parvula

. quadrangulata var. crassior
. rostellata
Fimbrystilis autumnalis
F. drummondii

F. spadicea
Hemicarpha micrantha
Kobresia simplisiuscula
Rhynchospora capitellata
Scirpus clintonii

. heterochaetus

. Maritimus var. paludosus
. micranthus

. paludosus

. smithii

. torreyi

. verecundus

Scleria triglomerata

S. verticillata

DOGS AOGDOROO ROP OO MDOMSD DAMIAN QMNNMHOONN|NNO

mmmmmm

ANNNHANAW

ARACEAE
Arisaema dracontium
Peltandra virginica

XYRIDACEAE

Xyris caroliniana
X. difformis

COMMELINACEAE
Tradescantia ohioensis

JUNCACEAE

Juncus acuminatus
. biflorus

. brachycarpus

. ensifolius

. greenei var. vaseyi
. longistylis

. Marginatus

. militaris

. secundus

. subtilis

. vaseyi

Cu Cu GC CC Cm Cu Cu Cn Ga.

LILIACEAE

Aletris farinosa
Allium cernuum

A. stellatum
Camassia scilloides
Chamaelirium luteum
Disporum lanuginosum
D. trachycarpum
Erythronium albidum
Polygonatum biflorum
P. canaliculatum
Smilax ecirrhata

S. illinoensis

S. lasioneura

S. rotundifolia
Tofieldia pusilla
Uvularia perfoliata

DIOSCOREACEAE
Dioscorea villosa

AMARYLLIDACEAE
Hypoxis hirsuta

IRIDACEAE

Iris brevicaulis
|. lacustris
Sisyrinchium albidum

ORCHIDACEAE

Aplectrum hyemale
Corallorhiza odontorhiza
Cypripedium arietinum
C. candidum

C. passerinum

Goodyera oblongifolia
Habenaria blephariglottis
H. ciliaris

H. flava var. herbiola

H. leucophaea

H. unalascensis

Isotria verticillata

Liparis lilifolia

Listera australis

L. borealis

Malaxis paludosa

Piperia unalascensis
Platanthera blephariglottis
Platanthera ciliaris
Platanthera flava var. herbiola
Platanthera leucophaea
Spiranthes lacera var. gracilis
S. lucida

S. magnicamporum

S. ochroleuca

Triphora trianthophora

SALICACEAE

Salix arctica

. arctophila

. brachycarpa var. brachycarpa
. calcicola

. lanata ssp. calcicola

. maccalliana

. reticulata

. Sericea

. vestita

OONONnONnDAN

MYRICACEAE
Myrica pensylvanica

JUGLANDACEAE

Carya glabra
C. laciniosa
Juglans nigra

BETULACEAE
Betula lenta

FAGACEAE

Castanea dentata
Quercus bicolor
Q. ellipsoidalis

Q. muehlenbergii
Q. palustris

Q. prinoides

Q. prinus

ULMACEAE
Celtis tenuifolia

MORACEAE
Morus rubra

POLYGONACEAE

Koenigia islandica
Polygonella articulata
Polygonum careyi

P. ramosissimum

P. tenue

CHENOPODIACEAE

Chenopodium foggii
Corispermum hyssopifolium
Salicornia europaea

PORTULACACEAE
Montia fontana

CARYOPHYLLACEAE
Arenaria humifusa
A. macrophylla
A. rubella
Cerastium alpinum
C. beeringianum
Melandrium apetalum ssp. arcticum
Minuartia rubella
Paronychia canadensis
Sagina procumbens
Silene virginica

NYMPHAEACEAE

Nelumbo lutea
Nuphar advena
N. luteum ssp. macrophyllum

RANUNCULACEAE

Anemonella thalictroides
Caltha natans
Cimicifuga racemosa
Hydrastis canadensis
Isopyrum biternatum
Myosorus minimus
Ranunculus fascicularis
R. hispidus var. marilandicus
R. pallasii

R. pedatifidus

R. rhomboideus
Thalictrum revolutum

T. sparsiflorum

T. thalictroides

BERBERIDACEAE
Jeffersonia diphylla
MAGNOLIACEAE

Liriodendron tulipifera
Magnolia acuminata

ANNONACEAE
Asimina triloba

PAPAVERACEAE
Stylophorum diphyllum

FUMARIACEAE
Corydalis flavula

CAPPARIDACEAE

Polanisia graveolens
P. dodecandra

CRUCIFERAE

Arabis alpina

. arenicola var. pubescens
. Canadensis

. drummondii

. holboellii

. lyrata var. lyrata

. perstellata var. shortii
Cardamine douglasii
Draba alpina

D. aurea

D. cana

>Prrrr,Yp

D. cinerea
D. glabella
D. hirta
D. incana
D. lanceolata

D. nivalis

D. reptans

Subularia aquatica ssp. americana

DROSERACEAE
Drosera linearis

PODOSTEMACEAE
Podostemum ceratophyllum

SAXIFRAGACEAE

Heuchera americana
Parnassia kotzebuei
Saxifraga aizoides

S. caespitosa

S. cernua

S. pensylvanica

ROSACEAE

Agrimonia parviflora
A. pubescens
Amelanchier amabilis
A. sanguinea var. grandiflora
Crataegus douglasii
Dryas drummondii
D. integrifolia

Geum laciniatum

G. triflorum

G. vernum

G. virginianum
Gillenia trifoliata
Potentilla gracilis

P. hippiana

P. paradoxa

P. pensylvanica

P. pulchella

P. rivalis

Prunus americana
Rosa setigera

LEGUMINOSAE

Amorpha canescens
Astragalus adsurgens var. robustior
A. agrestis

A. americanus

A. eucosmus

A. neglectus

Baptisia tinctoria
Cassia hebecarpa

C. marilandica

Cercis canadensis
Desmodium canescens
. Ciliare

. cuspidatum

. illinoensis

. marilandicum

. rotundifolium

. sessilifolium
Gleditsia triancanthos
Glycyrrhiza lepidota

SSNShehehs)

61

Gymnocladus dioica
Hedysarum mackenzii
Lespedeza intermedia

L. violacea

L. virginica

Lupinus perennis
Oxytropis campestris var. johannensis
. deflexa var. foliolosa

. foliolosa

. hudsonica

. Ixodes

. johannensis

. splendens

. viscida var. hudsonica
. viscida var. viscida
Petalostemum candidum
P. purpureum
Strophostyles helvola
Tephrosia virginiana
Vicia caroliniana

LINACEAE

Linum lepagei
. lewisii ssp. lepagei
. medium var. texanum
. perenne ssp. lepagei
. Striatum
. sulcatum
. Virginianum

RUTACEAE
Ptelea trifoliata

POLYGALACEAE
Polygala incarnata

EUPHORBIACEAE

Euphorbia commutata

E. corollata

E. obtusata

E. polygonifolia
LIMNANTHACEAE

Floerkea proserpinacoides

ANACARDIACEAE
Rhus copallina
CELASTRACEAE

Euonymus atropurpureus

VITACEAE
Vitis aestivalis

TILIACEAE
Tilia heterophylla

MALVACEAE

Hibiscus moscheutos var.
purpurascens
H. palustris

HYPERICACEAE

Hypericum gentianoides
H. prolificum
H. spathulatum

DOGO 61010

(age ae) Pega cl a

62

ELATINACEAE
Elatine minima

CISTACEAE

Helianthemum bicknellii
Lechea leggettii var. moniliformis
L. minor
L. stricta
VIOLACEAE
Hybanthus concolor
Viola epipsila ssp. repens
V. novae-angliae
V. palmata
V. pedata var. lineariloba
V. rotundifolia
V. sagittata
V. striata
V. triloba
CACTACEAE
Opuntia compressa
O. fragilis
O. humifusa

LYTHRACEAE

Ammania coccinea
Lythrum alatum

NYSSACEAE
Nyssa sylvatica
MELASTOMATACEAE
Rhexia virginica
ONAGRACEAE

Epilobium leptocarpum var. macounii

E. paniculatum var. subulatum
Gaura biennis

Ludwigia polycarpa

Oenothera nuttallii

O. pilosella

HALORAGIDACEAE

Myriophyllum farwellii
M. humile

ARALIACEAE

Echinopanax horridum
Oplopanax horridus
Panax quinquefolius

UMBELLIFERAE
Berula erecta var. incisa
Chaerophyllum procumbens
Erigenia bulbosa
Osmorhiza chilensis
O. obtusa
Oxypolis rigidior
Sanicula canadensis
Thaspium barbinode

CORNACEAE
Cornus drummondii
C. florida

ERICACEAE

Andromeda polifolia ssp. polifolia

Arctostaphylos alpina

A. rubra

Chimaphila maculata
Ledum palustre var. decumbens
Pterospora andromedea
Pyrola grandiflora
Rhododendron lapponicum
Vaccinium ovalifolium

V. pallidum

V. stamineum

V. vacillans

PRIMULACEAE

Armeria maritima ssp. labradorica
Glaux maritima var. obtusifolia
Primula intercedens

OLEACEAE
Fraxinus quadrangulata

GENTIANACEAE

Bartonia paniculata ssp. paniculata
B. virginica

Frasera caroliniensis

Gentiana alba

. detonsa var. nesophila

. detonsa var. raupil

. flavida

. nesophila

. puberula

. puberulenta

. quinquefolia

. raupii

Gentianella detonsa ssp. nesophila
Gentianella detonsa ssp. raupii
Gentianella quinquefolia

Sabatia angularis

Swertia caroliniensis

ASCLEPIADACEAE

Asclepias exaltata
A. hirtella

. lanuginosa

. nuttalliana

. ovalifolia

. purpurascens

. quadrifolia

. sullivantii

. verticillata

. Viridiflora

CONVOLVULACEAE
Ipomoea pandurata
POLEMONIACEAE
Collomia linearis
Phlox pilosa
P. subulata
HYDROPHYLLACEAE

Hydrophyllum appendiculatum
H. canadense
Phacelia franklinii

BORAGINACEAE
Lithospermum incisum

DODADADAODOD

>>>>>>>»>

L. latifolium

Mertensia maritima

M. virginica

Myosotis macrosperma

M. verna

Onosmodium molle var.
hispidissimum

VERBENACEAE

Lippia lanceolata var. recognita
Phyla lanceolata var. recognita
Verbena bracteata

LABIATAE

Agastache nepetoides

A. scrophulariaefolia
Blephilia ciliata

B. hirsuta

Collinsonia canadensis
Monarda didyma
Pycnanthemum incanum
P. pilosum

P. tenuifolium

Satureja arkansana

S. glabella var. angustifolia
Scutellaria nervosa var. calvifolia
Trichostema dichotomum

SCROPHULARIACEAE

Agalinis flava

A. gattingeri

A. skinneriana

A. tenuifolia var. parviflora
Aureolaria flava

A. pedicularia

A. virginica

Bartsia alpina

Buchnera americana
Castilleja raupii

Collinsia parviflora

C. verna

Conobea multifida
Euphrasia frigida

E. vinacea

Gerardia gattingeri

G. skinneriana

G. tenuifolia var. parviflora
Limosella aquatica
Mimulus alatus

M. glabratus

M. moschatus

Pedicularis flammea

P. lanceolata

P. lapponica

P. sudetica ssp. interioides
Penstemon gracilis
Rhinanthus borealis
Veronicastrum virginicum

BIGNONIACEAE
Campsis radicans
OROBANCHACEAE

Conopholis americana
Orobanche fasciculata

LENTIBULARIACEAE
Utricularia geminiscapa
ACANTHACEAE
Justicia americana

PLANTAGINACEAE
Littorella americana
Plantago cordata
P. maritima
RUBIACEAE

Galium kamtschaticum

G. pilosum

Houstonia caerulea
CAPRIFOLIACEAE

Triosteum angustifolium
Viburnum dentatum var. lucidum
V. recognitum

ADOXACEAE
Adoxa moschatellina

VALERIANACEAE

Valeriana ciliata

V. edulis var. ciliata

V. uliginosa

Valerianella chenopodifolia

V. intermedia

V. umbilicata
CAMPANULACEAE

Campanula americana
LOBELIACEAE

Specularia perfoliata
COMPOSITAE

Actinomeris alternifolia
Adenocaulon bicolor

Actinea acaulis var. glabra

A. herbacea

Antennaria farwellii

A. rupicola

A. subviscosa

Arnica alpina ssp. angustifolia
A. chionopappa

A. lonchophylla ssp. chionopappa
A. lonchophylla ssp. lonchophylla
A. whitneyi

Artemisia tilesii ssp. elatior
Aster acuminatus

. divaricatus

. dumosus

lowrieanus

. lutescens

. ontarionis

. pilosus var. demotus

. prenanthoides

. ptarmicoides var. lutescens
sericeus

. shortii

. subulatus

. tradescantii var. thyrsoides
. undulatus

. Vimineus

Bidens coronata

B. discoidea

Cacalia tuberosa
Chrysanthemum arcticum

C. bipinnatum ssp. huronense
Cirsium drummondii

C. pitcheri

C. pumilum ssp. hillii
Coreopsis lanceolata

C. tripteris

Eupatorium altissimum

E. coelestinum

E. purpureum

PPPS S SSDS YY YO YY

Gnaphalium purpureum var.
purpureum

Hieracium gronovii

H. longipilum

H. paniculatum

H. venosum var. nudicaule

Hymenoxys acaulis var. glabra

Krigia biflora

K. virginica

Lactuca floridana

Liatris aspera var. intermedia

L. spicata

Mikania scandens

Polymnia canadensis

Ratibida columnifera

R. pinnata

Senecio glabellus

S. obovatus

Silphium perfoliatum

S. terebinthinaceum

Solidago arguta

. houghtonii

. Jejunifolia

. missouriensis

. ohioensis

patula

. puberula

riddellii

rigida var. rigida

. sciaphila

. speciosa var. angustata

. uliginosa var. jejunifolia

. ulmifolia

Tanacetum huronense

Vernonia altissima

V. missurica

NON NN

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u Canada,
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George W. Argus et David J. White

LES PLANTES VASCULAIRES RARES DE L’ONTARIO

Musée national des Sciences naturelles
Division de la Botanique
OTTAWA (Ontario) K1A OM8

Juin 1977

PREFACE

Voici la première d’une série projetée de listes des plantes vasculaires
rares des divers territoires et provinces du Canada. Deux versions
préliminaires l'ont précédée, et ont servi de moyens de communication
au sein de la collectivité botaniste et naturaliste de l'Ontario. Il a circulé
plus de 75 listes sur lesquelles nous avons reçu une foule d'observations
dont il est tenu compte dans la présente liste. Nous avons en mains des
listes préliminaires pour les plantes rares de la Colombie-Britannique, de
l'Alberta, de la Saskatchewan, du Manitoba, du Québec, de la Nouvelle-
Ecosse et de Terre-Neuve et du Labrador, à l'intention de ceux qui
souhaiteraient contribuer a |’établissement des listes définitives pour ces
provinces.

L’introduction de la liste est composée de deux grandes parties: la
première (sections A a E) s'applique de façon générale a toutes les listes
de plantes rares en préparation; la seconde partie (sections F a H)
renferme l'information qui vise particulièrement la liste ontarienne.
Après l'introduction vient la liste des plantes vasculaires rares de
l'Ontario, une bibliographie et trois annexes, deux listes de noms rejetés
et la liste systématique des plantes vasculaires rares de l'Ontario.

Nous nous rendons compte, cependant, que la documentation d'appui
fait grandement défaut pour nombre des plantes inscrites, et qu'il reste
encore fort à faire avant d’avoir la documentation aussi complete et
exhaustive que possible. II n’en reste pas moins que nous avons cherché à
réunir les meilleures données disponibles à l'heure actuelle. Nous
espérons donc que cette liste sera utile à toux ceux que préoccupe le
milieu naturel, et nous accueillerons vos observations et suggestions, car
nous projetons de la rééditer dès que le perfectionnement de nos
connaissances au sujet des plantes vasculaires rares de l'Ontario le
justifiera.

George W. Argus
David J. White
Janvier 1977

REVISIONS ET OBSERVATIONS

Priére de faire parvenir toute communication

a cette adresse:
Programme portant sur les plantes rares et menacées
Musée national des Sciences naturelles
Division de la Botanique
Ottawa, Ontario
KIA OM8

Il y a lieu de joindre toute la documentation possible aux demandes
de radiation ou d’inscription de plantes sur la liste.

M 1e _
oo 2

TABLE DES MATIERES

2 Préface
7 Introduction
A. Listes préliminaires 7
Définitiones 7
Présentation des listes 8
Utilité des listes 8
Projects d'avenir 9
La situation en Ontario 9
Charactéristiques distributives des plantes rare en ontario 9
Remerciements 11
13 Liste des plantes vasculaires rares de l'Ontario
53 Bibliographie
61 Les annexes
Fe Rapports vérifiés 61
II. Plantes probablement ou sûrement allogènes 61
ti Liste des plantes vasculaires rares de l'Ontario dans l'ordre
taxonomique 62

LAIT MIE D 10)

INTRODUCTION

De longue date, on reconnait qu’il faudrait réunir
des données scientifiques sur les plantes rares et
menacées d’extinction au Canada pour justifier les
mesures écologiques qui les protégeraient éventuelle-
ment. En 1973, la section de taxonomie et de phyto-
géographie de l'Association canadienne de Botanique
formait donc un comité des plantes rares et menacées
au Canada. Pour sa contribution au projet, |’Herbier
national entreprenait alors de rassembler des don-
nées sur les plantes rares des divers provinces et
territoires. Une fois réalisé, l'inventaire général de-
vrait servir non seulement a la préservation d’espéces
individuelles, mais aussi a la délimitation des aires
qui, renfermant une florule unique a cause de leur
habitat ou de leur climat, ont besoin de protection.
Certaines plantes qui naguére appartenaient a la flore
du Canada ont été frappées d’extinction ou d’éradica-
tion au cours des 75 dernières années. D’autres
plantes sont devenues tellement rares qu’elles sont en
voie d’éradiction totale, et certains habitats jadis
étendus se sont modifiés si considérablement que la
survivance de mainte espéce s’en trouve menacée.
Encore que la préservation de certaines espèces puis-
se être assurée au niveau de l'individu (grâce à un
jardin botanique, par exemple), il n’en faudra pas
moins dans la plupart des cas en venir à conserver des
aires géographiques suffisamment vastes pour proté-
ger l'habitat de ces plantes uniques.

Dans la compilation de ces listes, nous ne nous
sommes intéressés qu'aux plantes rares, faute des
données nécessaires, dans le cas de la plupart des
plantes de la flore canadienne, pour déterminer si
elles étaient menacées d'extinction ou en voie de
disparition.

A mesure qu’avancait le travail, nous avons davan-
tage pris conscience de la pénurie de données même
sur les plantes rares, et du besoin urgent d'enquêtes
sur place et de recherches taxonomiques et phytogéo-
graphiques sur les plantes rares du Canada.

Si nous avons décidé d'établir un inventaire pour
chaque province et chaque territoire plutôt qu'une
liste nationale unique, c'est pour diverses raisons.
Tout d’abord, il exite plus d'informations (dans les
données et cartes publiées et inédites, aussi bien que
d’après notre propre expérience) au niveau régional
qu'au niveau national. D'autre part, si les plantes ont
besoin d'être légalement protégées, les mesures légis-
latives pertinentes relèvent des provinces, de sorte
qu'il importe bien plus d'offrir aux autorités provincia-
les le plus d’information possible. De fait, certaines
provinces ont déjà légiféré sur les especes menacées
d'extinction, mais elles exigent tout de même une liste

dûment documentée des plantes qu'il y aurait lieu de
protéger légalement. Bien plus, il importe d’avoir des
données sur les plantes rares ailleurs - en vue de
déterminer les aires naturelles dont il faudrait spécia-
lement tenir compte au sein de ces régions elles-
mêmes.

A. Listes préliminaires

Au début, la compilation des listes préliminaires
s'est faite à partir des publications notamment les
flores régionales et locales, les monographies, les
communications de phytogéographie et les revues
spécialisées en botanique et en sciences naturelles,
des listes de contrôle établies par le Programme
biologique international de la conservation des mi-
lieux biologiques terrestres (IBP-CT), des communica-
tions personnelles et grâce à l'examen des spécimens
de l'herbier du Musée des Sciences naturelles (CAN)
et du ministère de l'Agriculture à Ottawa (DAO). Ces
listes ont été distribuées à des botanistes et à d’autres
chercheurs, accompagnées d’une demande d’obser-
vations et de renseignements complémentaires et
c'est de cette démarche que résulte le présent
inventaire.

Les plantes sont énumérées dans l'ordre alphabéti-
que des noms scientifiques. Chaque rubrique compor-
te, dans la mesure du possible, les données suivantes:
synonymes, références à |’appui de son titre de plante
rare ou en voie de disparition, distribution au Canada
et en Alaska, renvois à des cartes distributives et à des
observations, publiées et inédites, relatives à sa rareté
au Canada, mesures de protection et autres
observations.

Une plante n'est inscrite que si elle est indigène et
rare dans la province ou le territoire concerné, sans
égard à sa présence dans les autres provinces et
territoires. Il est tenu compte des espèces, des sous-
espèces et des variétés, mais non des types ni des
hybrides.

B. Définitions

Dans le présent texte, le mot plante signifie l'ensem-
ble des individus désignés par un même nom de
plante.

Une plante est dite rare, si elle n’a qu'une faible
population réunie dans une aire réduite ou dispersée
sur un vaste territoire au sein de la province concer-
née. Une aire est dite ‘‘réduite’’ si elle a une superficie
comparable à la zone carolinienne de la forêt décidue,
soit une bande d'environ 50 milles de large au nord
immédiat du lac Érié dans le sud de l'Ontario, ou

encore l'étroite bande de toundra arctique le long du
littoral de la baie d'Hudson.

Une plante est dite menacée d'extinction s'il est
probable qu'elle sera en voie de disparition dans un
avenir rapproché dans l’ensemble ou dans une partie
notable de l'aire géographique qu'elle occupe dans
une même province ou un même territoire.

Une plante est dite en voie de disparition quand elle
est menacée d’éradication dans l’ensemble ou dans
une partie notable de la circonscription géographique
qu'elle occupe dans une même province ou un même
territoire.

C. Présentation des listes

La nomenclature des listes n’est fondée sur aucune
source particulière faisant autorité et les synonymes
sont indiqués au besoin pour assurer la compréhen-
sion des renvois.

Afin de justifier au mieux l'inscription des plantes
dans la liste, nous mentionnons les sources pertinen-
tes dans le cas de chaque nom de plante. Il s’agit
parfois d'une communication publiée comportant une
carte distributive, ou encore d’une observation dans
une flore locale, d’une communication personnelle
émanant d’un expert, de spécimens figurant dans un
des herbiers d'Ottawa, voire d'une carte distributive
sur laquelle nous pouvons avoir fondé notre jugement.
Dans certains cas, la documentation est complète et
péremptoire, alors que dans d’autres elle n'est que
superficielle ou désuète, et doit donc être vérifiée.
Nous avons inscrit toutes les plantes pour lesquelles
nous avons trouvé une référence valable pour en
justifier la rareté, préférant pécher par excès de
générosité plutôt que de rigueur. D'autre part, nous
n'avons pas cherché, pour le moment, à réexaminer
les spécimens utilisés pour étayer les rapports et les
cartes distributives, ni à en vérifier l'identification.
Néanmoins, au cours de |’épuration des listes, les
spécimens seront étudiés et les erreurs, une fois
décelées, corrigées. Il y a à |’Herbier national un
dossier d’ouvert au sujet des plantes inscrites puis
radiées, et les motifs de la radiation y sont indiqués.
Les annexes comprennent le nom de certaines plantes
radiées. L’annexe | (Rapports vérifiés) comprend les
plantes radiées parce que leur inscription était fondée
sur une erreur d’identification, sur une erreur d’éti-
quetage ou sur l’absence des spécimens eux-mêmes.
L’annexe || (Plantes probablement ou sûrement allo-
genes) comprend les plantes dont on sait ou dont on
se doute qu’elles sont étrangères à l'Ontario.

Un index de cartes distributives des plantes rares
du Canada, publiées et inédites, est compilé, et les
renvois à ces cartes fournis pour le plus grand nombre
de plantes possible. Quand une carte mentionnée ne

recouvre qu'une partie de l’ensemble de l'aire qu'elles
occupent en Amérique du Nord, cette donnée se
trouve fournie après la référence. La distribution
générale au Canada et en Alaska est indiquée pour
chaque plante d'après les cartes et publications dispo-
nibles. Nous avons traduit l'aire en termes de province
et d'Etat en deux étages traversant en gros la région
étudiée d'ouest en est. Le premier va de l'Alaska aux
territoires (Aka-Y-TNO) et le second de la Colombie-
Britannique au Labrador (CB-Alta-Sask-Man-Ont-
Q-NB-ÎPÉ-NÉ-TN-Lab). Le trait d'union entre des pro-
vinces marque une distribution continue, et la virgule
une distribution interrompue. L’étage de l'Alaska et
des territoires constitue une exception; il est toujours
suivi d’une virgule pour marquer la fin du premier
étage.

Pour préciser le cas des plantes communes à une
partie d’une province ou d’un territoire mais ayant
également une petite population séparée dans une
autre partie de la même province ou du même territoi-
re, nous l'avons mentionné en décrivant l'aire géogra-
phique qu'elles occupent.

Enfin, il peut y avoir des observations concernant la
rareté de la plante dans l’ensemble du Canada, qu'elle
soit en voie de dispartition, éliminée ou peut-être
même allogène dans la province concernée, concer-
nant également son statut aux États-Unis, ou encore
les mesures de protection dont bénéficie la plante.

Pour rendre service aux taxonomistes et à d’autres
spécialistes qui trouveraient utile d’avoir une liste
dans l'ordre taxonomique, nous avons ajouté à l’an-
nexe III la liste des plantes rares et des synonymes,
classés par ordre de familles suivant le Gray’s Manual
of Botany (Fernald, 1950). Au sein d'une même famil-
le, les genres et les espèces se trouvent par ordre
alphabétique.

D. Utilité des listes

Les listes serviront à fournir les données scientifi-
ques nécessaires à la protection de certaines plantes
rares. Les planificateurs et décisionnaires en matière
de gestion du territoire auront besoin de savoir quelles
sont les plantes appelant une attention particulière
dans l'élaboration des projets de mise en valeur du
territoire. Comme chaque plante fait l’objet d'une
carte distributive, la zone de concentration des plan-
tes rares est évidente, et l'on reconnaitra facilement
les habitats et les aires géographiques dont il faudrait
protéger l'état naturel. Les botanistes et les autres
naturalistes pourront se servir des listes pour y puiser
le nom des plantes à vérifier sur place et à cartogra-
phier en détail. Il devrait en résulter une évaluation de
l'état de la population des plantes rares, une défini-
tion des besoins écologiques et une amélioration de la

connaissance des causes qui menacent leur existence.
Néanmoins, il faudra considérer comme temporaires
ces listes tant que les plantes inscrites n’auront pas
été dûment vérifiées sur place.

E. Projets d'avenir

À l'Herbier national, nous avons organisé un centre
de collecte, d'entreposage et de publication de don-
nées sur la distribution, la population, les besoins
écologiques et la répartition des plantes du Canada
entre celles qui sont rares et celles en voie d’extinc-
tion. L’un des projets les plus importants consistera à
cartographier, d'après la date de collection, les spéci-
mens d’herbier, puis à vérifier sur place l’état actuel
de la population de la plante concernée. Les zones
comportant des plantes rares au sein des provinces et
des territoires seront délimitées, et le besoin de
protéger ces aires géographiques ou les habitats uni-
ques qu'elles renferment sera défini. Nous espérons
faire de ce centre une banque d'informations sur les
plantes rares; il sera ouvert a tous les intéressés et il y
sera publié régulièrement des listes et des rapports
mis a jour sur certaines zones et sur des plantes
particulières. Nous espérons aider les botanistes lo-
caux à signaler l'existence de plantes en voie d’extinc-
tion, aux autorités compétentes, pour qu'il soit possi-
ble de prendre les mesures voulues pour en assurer la
protection.

Évidemment, ni individu ni groupe d'individus ne
connaît suffisamment toute la flore du Canada pour
pouvoir mener à bien un projet d’une telle ampleur
sans s'assurer de l’appui de tous les botanistes et des
autres naturalistes. Nous vous demandons instam-
ment de nous faire partager vos connaissances en
nous faisant parvenir vos observations sur la présente
liste. Il y a lieu de joindre toute la documentation
possible aux demandes de radiation et d'inscription
de plantes. S'il existe un spécimen, il convient d’an-
nexer une copie, voire une photocopie, de l'étiquette.
Nous cherchons les références ou les exemplaires de
cartes distributives publiées et inédites. La banque de
données sur les cartes distributives et d'informations
sur les plantes rares sera ouverte à quiconque souhai-
terait la consulter. Cependant, nous ne révèlerons pas
l'emplacement exact de certaines plantes rares si
l'informateur a demandé cette restriction ou si nous
croyons cette mesure nécessaire pour protéger les
populations concernées. Enfin les cartes distributives
inédites ne sauraient être communiquées sans la
permission du compilateur.

Les observations et les demandes de renseigne-
ments doivent être envoyées à l'adresse indiquée à la
page 3.

F. La situation en Ontario

On s'inquiète de plus en plus en Ontario des mena-
ces qui planent sur la flore et sur la faune. C'est ainsi
qu'il y a maintenant des mesures législatives desti-
nées à prévenir la disparition d'espèces et d’habitats:
la loi de 1971 sur la protection des espèces menacées
d'extinction, destinée à assurer la protection d’espé-
ces et d’habitats menacés d'extinction ou d’éradica-
tion par diverses causes comme la destruction de
certains habitats et la surexploitation, et la loi de 1970
sur les parcs provinciaux qui crée une catégorie dis-
tincte de parcs, les réserves écologiques, dont l'objet
essentiel consiste à assurer la préservation intégrale
des caractéristiques naturelles à des fins scientifiques
et éducatives. Outre les parcs proprement dits, certai-
nes zones de parcs déjà constitués peuvent être
désignées pour en assurer la protection à titre de
réserves écologiques.

Le milieu naturel soulève également bien des inquié-
tudes aux autres paliers de gouvernment. En effet,
concurremment avec la planification de la politique
officielle, certaines municipalités régionales, notam-
ment Waterloo et Ottawa-Carleton, ont procédé à
l'étude des zones écologiquement sensibles en raison
de leur importance pour le bien-être de la collectivité.

La présente liste doit, d'après sa conception, servir
d'inventaire des plantes dont on propose l'inscription
au titre de la loi sur la protection des espèces mena-
cées d'extinction, et de document d'appui en vue
d'obtenir une protection spéciale en faveur des aires
géographiques écologiquement sensibles et des réser-
ves écologiques.

G. Caractéristiques distributives des plantes rares en
Ontario

Les renseignements dont nous disposons ne nous
autorise pas à analyser en détail les diverses caracté-
ristiques distributives manifestées par les plantes
rares de l'Ontario. Néanmoins, l'examen des cartes
relatives à certaines de ces plantes montre qu'on peut
les regrouper en plusieurs catégories en fonction de
leur habitat et de leurs affinités géographiques. Aucu-
ne des plantes rares n'est l'apanage exclusif de la
province: on les retrouve aussi toutes ailleurs. Elles se
trouvent ici à la limite de leur aire géographique, soit
sous forme de groupes très isolés, soit disséminées
mais rares. Quelquefois même, on les retrouve dans
des habitats inhabituels bien délimités ou dans des
habitats peu répandus dans la province.

Le groupe le plus évident se compose des plantes
d’affinités caroliniennes, qui se trouvent dans la zone
de forêt décidue du sud de l'Ontario, comme: Campsis
radicans, Carya glabra, Cenchrus longispinus, Hydras-
tis canadensis, Iris brevicaulis, Jeffersonia diphylla,

10

Magnolia acuminata, Nyssa sylvatica et Sanicula cana-
densis. Toutes ces plantes se trouvent ici a la limite
septentrionale de leur aire géographique. Elles font
généralement partie d’une distribution ininterrompue
mais cerrtaines, telles Tilia heterophylla et Triosteum
angustifolium, constituent des aires septentrionales
isolées des circonscriptions mérédionales des mémes
plantes.

Il existe un groupe de plantes similaires ayant des
affinités avec celles de la plaine côtière de l'Atlantique;
la plupart d'entre-elles, notamment Aster acuminatus,
Pinus ridiga et Rhexia virginica, se trouvent à la limite
occidentale de leur aire géographique dans le sud-est
de l'Ontario, alors que Myrica pennsylvanica constitue
une aire isolée de la plaine côtière.

Les massifs détachés des Prairies et les alvars de
calcaire du sud de l'Ontario, dans la presqu'île Bruce
et l’île Manitoulin, renferment des plantes dont la
principale aire géographique se trouve dans les gran-
des plaines de l'Amérique du Nord. C’est ainsi que des
plantes comme Amorpha canescens, Asclepias ovalifo-
lia, Bouteloua curtipendula, Cirsium drummondii,
Geum triflorum et Hymenoxys acaulis ne se trouvent
en Ontario que comme populations dispersées et
séparées du plus grand nombre.

Nombre de plantes ayant des affinités avec l'Ouest,
notamment avec les Rocheuses, existent en Ontario
sous forme de populations isolées. Ainsi Cystopteris
montana, Dryas drummondii, Piperia unalascensis et
Vaccinium ovalifolium ne se trouvent en Ontario que
dans la région des Grands Lacs. D’autres, comme
Festuca brachyphylla et Oxytropis splendens occupent
également des aires géographiques dans le nord de
l'Ontario en plus de la région des Grands Lacs. D’au-
tres par contre, comme Astragalus americanus, Jun-
cus ensifolius et Salix brachycarpa ne se trouvent que
dans le nord de l'Ontario, populations séparées de
l'aire géographique principale dans l'Ouest.

Les habitats de la toundra sur le littoral de la baie
d'Hudson et de la baie James renferment des espèces
à affinités arctiques qui ne se retrouvent nulle part
ailleurs en Ontario; Armeria maritima, Draba alpina,
Dupontia fisheri, Mertensia maritima Ranunculus pal-
lasii et Salix arctophila illustrent le cas des plantes de
la toundra, qui ne se trouvent que dans le nord de
l'Ontario, constituant la limite méridionale d'une aire
ininterrompue. D'autres plantes telles Festuca baf-
finensis, Hierochloe pauciflora, Montia fontana et Par-
nassia kotzebuei se retrouvent le long du littoral
septentrional, séparées du centre principal de popula-
tion dans le nord.

Il existe également un certain nombre de plantes
intéressantes ayant des affinités avec le nord, qui non
seulement se retrouvent dans le nord de l'Ontario,

mais qui ont également des populations exceptionnel-
les isolées dans des ravins et sur la paroi des falaises
le long de la côte nord du lac Supérieur, notamment
Carex heleonastes, Tofieldia pusilla, Trisetum triflo-
rum, ssp. molle, et Woodsia glabella.

D'autres espèces encore ne se retrouvent en Ontario
que dans la région des Grands Lacs, notamment les
plantes exclusives à celle-ci: Agropyron psammophi-
lum, Arnica whitneyi, Cirsium pitcheri, Iris lacustris et
Solidago houghtonii. Ces plantes dispersées mais peu
nombreuses ou elles se trouvent restent les plus
difficiles a documenter parce que les cartes distributi-
ves ne rendent pas vraiment compte de leur abondan-
ce, par exemple Dryopteris goldiana, Fimbristylis
drummondii et les orchidacées Cypripedium arieti-
num, Listera borealis, Platanthera flava et Platanthera
leucophaea.

Il est plus difficile de peser les données relatives aux
plantes dont on a relevé la présence en Ontario au
cours de l'histoire mais qui n'existent plus à l'état
sauvage. Toutefois, nombre de plantes recueillies il y a
cinquante ou cent ans ne l'ont pas été depuis, de sorte
qu'il est fort possible qu'elles appartiennent à la
catégorie des plantes éliminées, par exemple: Aristida
dichotoma, Cercis canadensis (réapparue comme plan-
te ornementale), Mikania scandens, Platanthera cilia-
ris et Valerianella chenopodifolia.

Encore qu'aucune plante rare ne soit exclusive a
l'Ontario, il n’en manque pas qui se sont raréfiées
d'un bout à l’autre de leur aire géographique, y
compris en Ontario. Certaines plantes jadis répandues
dans les prairies ou dans les forêts décidues du nord
des États-Unis y sont désormais très rares. À cause de
la profonde modification des habitats, de sorte que les
populations ontariennes restent peut-être les seules
populations viables de ces plantes. La seule consulta-
tion des cartes distributives ne rend pas évident que
des plantes comme Cypripedium candidum, Iris lacus-
tris, Platanthera flava et Potamogeton hillii sont deve-
nues fort rares sur toute l'aire géographique qu'elles
occupent aux États-Unis; elles figurent désormais à la
liste, établie par la Smithsonian Institution, des espè-
ces menacées aux États-Unis. Phyllitis scolopendrium
var. americanum est l’une des quelques plantes rares
dont la principale aire géographique se trouve en
Ontario. On admet généralement que cette variété
nord-américaine de fougère eurasienne est en voie de
disparition aux Etats-Unis et peut-être menacée d’ex-
tinction d’un bout à l’autre de son aire géographique.

Une étude circonstanciée de la distribution et de
l'écologie des plantes inscrites sur la présente liste
devrait révéler de nouvelles caractéristiques distribu-
tives et écologiques. Néanmoins, il est bien évident
d’après notre bref aperçu que l'Ontario possède des

habitats et des voisinages uniques de plantes qu’il
faut protéger. Certaines de ces importantes zones
naturelles jouissent déja d’une certaine forme de
protection, comme dans le cas des habitats de toun-
dra au parc provincial de l’Ours polaire et dans les
foréts décidues et les autres habitats méridionaux du
Parc national de la Pointe-Pelée. Mais il n’en reste pas
moins que bon nombre de plantes et d’habitats ne
jouissent pas de la protection voulue et qu’il faudrait
prendre les mesures nécessaires avant qu’elles dispa-
raissent ou subissent des dommages irréparables.

H. Remerciements

Nous savons gré aux personnes suivantes d’avoir
contribué à la présente liste: P.L. Aird de l'Université
de Toronto, D.M. Britton de l'Université de Guelph,
D.F. Brunton du ministère des Richesses naturelles de
l'Ontario, C.A. Campbell de Waterloo en Ontario, P.M.
Catling de l’Université de Toronto, W.J. Crins du
ministère des Richesses naturelles de l'Ontario, H.M.

1

Dale de l’Université de Guelph, W.G. Dore d’Agricultu-
re Canada, J.M. Gillett du Musée national des sciences
naturelles, E. Haber du Musée national des sciences
naturelles, L. Kershaw l'Université de Waterloo, J.D.
LaFontaine d’Agriculture Canada, L.E. Lamb de l'Uni-
versité de Waterloo, G.B. McKeating du ministére des
Richesses naturelles de l'Ontario, J. McNeill d’Agricul-
ture Canada, R.J. Moore d’Agriculture Canada, J.K.
Morton de l'Université de Waterloo, G.A. Mulligan
d’Agriculture Canada, P. Pratt du ministére des Ri-
chesses naturelles de l'Ontario, A.A. Reznicek de
l'Université de Toronto, J.H. Soper du Musée national
des sciences naturelles et A.A. Wellwood de l’Universi-
té Wilfrid-Laurier.

Nous tenons tout particulièrement à exprimer notre
reconnaissance envers L. Kershaw et J.K. Morton qui
nous ont donné libre accès à leurs dossiers sur les
plantes vasculaires rares du Canada, à W.J. Dore et J.
McNeill qui nous ont permis d'utiliser leur manuscrit
inédit sur les herbes de l'Ontario et à J.H. Soper qui a
fait la lecture critique du manuscrit.

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13

LISTE DES PLANTES VASCULAIRES RARES DE L’ONTARIO

Actinea acaulis var. glabra = Hymenoxys acaulis var.
glabra

Actinea herbacea = Hymenoxys acaulis var. glabra

Actinomeris alternifolia (L.)DC.
Sources: Kershaw 1976 et carte
REPARTITION: soOnt
CARTE: Soper 1962 Ont
CONDITIONS: Rare au Canada.

Adenocaulon bicolor Hook.
SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
cartes
REPARTITION: SCB-soAlta, scOnt
ONTARIO: Pén. Bruce
CARTE: Fernald 1935, Given & Soper 1976 Ont

Adoxa moschatellina L.
Sources: Kershaw 1976, Kershaw & Morton 1976, Rez-
nicek 1975-76 et cartes
REPARTITION: Aka-TNO, CB-wOnt, localisé (Boivin 1967)
CARTE: Given & Soper 1976 Ont, Hultén 1971, Porsild
1966

CONDITIONS: En voie de disparition dans le Wisconsin
(Read 1976).

Agalinis flava = Aureolaria flava

Agalinis gattingeri Small

(Gerardia gattingeri Small)

SOURCES: Kershaw 1976 et carte

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Lac Ste-Clair

CARTE: Pennell 1935

CONDITIONS: Rare au Canada. Menacée dans le Wiscon-
sin et le Michigan (Read 1976, Wagner 1976). Rare
dans le Minnesota et l'Indiana (Morley 1972, Barnes
1975).

Agalinis skinneriana (Wood)Britt.

(Gerardia skinneriana Wood)

SOURCES: Kershaw 1976 et carte

REPARTITION: swOnt (Boivin 1967)

ONTARIO: Lac Ste-Clair

CARTE: Pennell 1935

CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Wisconsin (Read 1976). Rare dans l'Indiana
(Barnes 1975).

Agalinis tenuifolia (Vahl)Raf. var. parviflora
(Nutt.)Pennell
(Gerardia tenuifolia Vahl var. parviflora Nutt.)
SOURCES: Beschel et al. 1970, Cruise 1969, Stewart &
James 1969 et carte
REPARTITION: seMan-s0Q (Boivin 1967)
CARTE: Pennell 1935

Agastache nepetoides (L.)Ktze.
SOURCES: Cruise 1969, Stewart & James 1969 et carte
REPARTITION: Ont-soQ (Boivin 1967)
CARTE: Lint & Epling 1945
CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Wisconsin (Read 1976). Rare dans le Minne-
sota (Morley 1972).

Agastache scrophulariaefolia (Willd.)Ktze.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Lint & Epling 1945
CONDITIONS: Rare et peut-être éliminée du Canada.

Agrimonia parviflora Ait.
Sources: CAN, Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Cté d'Essex
CONDITIONS: Rare au Canada.

Agrimonia pubescens Wallr.
SOURCES: Cruise 1969, Kershaw 1976 et carte
REPARTITION: soOnt-soQ (Boivin 1967)
CARTE: Skalicky 1973
CONDITIONS: Rare au Canada.

Agropyron boreale (Turcz.) Drobov ssp. boreale
(A. latiglume auct.)
Sources: CAN, Dore & McNeill 1976
REPARTITION: Aka-TNO, nMan-nOnt-nQ, Lab
ONTARIO: Baie d'Hudson
CARTE: Hultén 1968, Raup 1947

Agropyron latiglume = A. boreale ssp. boreale

Agropyron dasystachyum var. psammophilum = A.
psammophilum

Agropyron psammophilum Gillett & Senn

(Agropyron dasystachyum (Hook.)Scribn. var.
psammophilum (Gillett & Senn)E. Voss)

SOURCES: Cartes

REPARTITION: Ont (Boivin 1967)

ONTARIO: Grands Lacs

CARTE: Dore & McNeill 1976 Ont, Gillett & Senn 1961,
Given & Soper 1976 Ont

CONDITIONS: Rare au Canada. Menacée dans le Wiscon-
sin et le Michigan (Read 1976, Wagner 1976).

Aletris farinosa L.
SOURCES: Cruise 1969, Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Soper 1962 Ont
CONDITIONS: Rare au Canada.

Allium cernuum Roth
Sources: Brunton 1974-76, Soper 1975-76
REPARTITION: CB-Sask, soOnt (Boivin 1967)

14

Allium stellatum Fraser
SOURCES: Brunton 1974-75, Reznicek 1975-76, Soper
1975-76
REPARTITION: Sask-oOnt (Boivin 1967)

Alopecurus alpinus Sm.
Sources: Cartes
REPARTITION: Aka, CB-nOnt-Q (Boivin 1967)
ONTARIO: Baie d’Hudson
CARTE: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964

Amelanchier amabilis = A. sanguinea var. grandiflora

Amelanchier sanguinea (Pursh)DC. var. grandiflora
(Wieg.)Rehder
(A. amabilis auct.)
Sources: Catling 1976b et carte
REPARTITION: SOnt-sQ
CARTE: McKay 1973 Ont, Cinq-Mars 1971 Q
CONDITIONS: Rare au Canada.

Ammania coccinea Rottb.
Sources: Campbell 1976, Kershaw 1976
REPARTITION: soCB, soOnt (Boivin 1967)
CONDITIONS: Rare au Canada. Eliminée dans la Pennsyl-
vania (Wherry 1975).

Amorpha canescens Pursh
SOURCES: Kershaw 1976
REPARTITION: SMan-oOnt (Boivin 1967)
CARTE: Wilbur 1964
CONDITIONS: Rare dans le Michigan (Wagner 1976).

Andromeda polifolia L. ssp. polifolia
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-nOnt-Q (Boivin 1967)
ONTARIO: Baies d’Hudson et de James
CARTE: Hultén 1968, Hultén 1971, Raup 1947, Soper &
Heimburger 1976 Ont

Andropogon virginicus L.
Sources: Catling et al. 1977, Dore & McNeill 1976
REPARTITION: soOnt
ONTARIO: Cté de Norfolk
CARTE: Griggs 1913
CONDITIONS: Rare au Canada.

Anemonella thalictroides (L.)Spach.
(Thalictrum thalictroides (L.)Eames & Boivin)
SOURCES: Kershaw 1976 et carte
REPARTITION: sOnt
CARTE: Soper et al. 1963
CONDITIONS: Rare au Canada.

Antennaria farwellii Greene
Sources: FON 1969, Kershaw 1976, Kershaw & Morton
1976, Krotkov 1940
REPARTITION: scOnt (Fernald 1950)
ONTARIO: Pén. Bruce
CONDITIONS: Rare au Canada.

Antennaria subviscosa Fern.

Sources: Kershaw 1976, Kershaw & Morton 1976 et
carte

REPARTITION: Y-TNO, nCB, nSask, nOnt, Q (Boivin 1967)
ONTARIO: Lac Supérieur
CARTE: Porsild 1966

Aplectrum hyemale (Muhl.)Nutt.

Sources: Beschel et al. 1970, Kershaw 1976, Lafontaine
& White 1974 et cartes

REPARTITION: Sask, s&eOnt, soQ
CARTE: Auclair 1972, Case 1964 Grands Lacs, Luer 1975

CONDITIONS: Rare au Canada. Extrêmement rare dans
l'ouest de l'Etat de New York (Clinton Herbarium
1974).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans le Minnesota,
le Wisconsin, l'Etat de New York (McGaugh & Geno-
ways 1976)

Arabis alpina L.
SOURCES: Cartes
REPARTITION: TNO, Man-nOnt-Lab
ONTARIO: Baie d'Hudson
CARTE: Hopkins 1937 eCan, Hultén 1958, Porsild 1964

Arabis arenicola (Richards.)Gelert var. pubescens
(Wats. )Gelert

SOURCES: Moir 1958 et cartes

REPARTITION: Aka, TNO, nOnt-nQ

ONTARIO: Baies d'Hudson et de James

CARTE: Cody 1971, Hopkins 1937 cCan, Hultén 1968

Arabis canadensis L.
SOURCES: Kershaw 1976
REPARTITION: SOnt-soQ (Boivin 1967)

CONDITIONS: Rare au Canada. En voie de disparition
dans le New Hampshire (Hodgdon 1973).

Arabis drummondii Gray
SOURCES: Reznicek 1975-76 et cartes
REPARTITION: Aka-TNO, CB-Sask, ncOnt, sQ-Lab, locali-
sé (Boivin 1967)
ONTARIO: Lac Supérieur

CARTE: Hopkins 1937, Hultén 1968, Porsild 1966, Rollins
1941

CONDITIONS: Rare dans I'Indiana (Barnes 1975).

Arabis holboellii Hornem.
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-Ont, Q

CARTE: Given & Soper 1976 Ont, Hopkins 1937 eCan,
Hultén 1968, Raup 1947
CONDITIONS: Rare dans le Minnesota (Morley 1972).

Arabis lyrata L. var. lyrata
Sources: Beschel et al. 1970, Cruise 1969, FON 1969,
Krotkov 1940 et cartes
REPARTITION: Ont
ONTARIO: Grands Lacs
CARTE: Hopkins 1937, Hultén 1968
CONDITIONS: Rare au Canada.

Arabis perstellata E.L.Braun var. shortii Fern.
SOURCES: Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Pointe Pelée
CONDITIONS: Rare au Canada.

Arctagrostis latifolia (R.Br.)Griseb.
Sources: Moir 1958 et cartes
REPARTITION: Aka-TNO, nCB-nOnt-nQ, Lab
ONTARIO: Baie d'Hudson
CARTE: Dore & McNeill 1976 Ont, Hultén 1964, Hultén
1968, Porsild 1964

Arctophila fulva (Trin.)Anderss.
(Colpodium fulvum (Trin.)Griseb.)
SOURCES: Cartes
REPARTITION: Aka-TNO, Man-nOnt-Q (Boivin 1967)
ONTARIO: Baie d'Hudson
CARTE: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964

Arctostaphylos alpina (L.)Spreng.
Sources: Cartes
REPARTITION: Aka-TNO, nCB, Man-nOnt-Q, TN-Lab
ONTARIO: Baie d'Hudson
CARTE: Hultén 1968, Hultén 1971, Porsild 1964
CONDITIONS: En voie de disparition dans le New Hamp-
shire (Hodgdon 1973).

Arctostaphylos rubra (Rehd.& Wilson)Fern.
Sources: CAN, Moir 1958 et cartes
REPARTITION: Aka-TNO, CB-Sask, Man-nOnt-Q, TN-
Lab
CARTE: Hultén 1968, Hultén 1971, Porsild 1964, Soper &
Heimburger 1976 Ont

Arenaria humifusa Wahl.
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-neOnt-Q, TN-Lab
ONTARIO: Baie de James
CARTE: Given & Soper 1976 Ont, Hultén 1958, Hultén
1968, Porsild 1964, Raymond 1950b

Arenaria macrophylla Hook.
SouRCESs: Cartes
REPARTITION: TNO, CB, Sask, nOnt-nQ, Lab, localisé
(Boivin 1967)
CARTE: Fernald 1925, Given & Soper 1976 Ont

Arenaria rubella Wahl.
(Minuartia rubella (Wahl.) Graebn.)
Sources: CAN, Moir 1958 et cartes
REPARTITION: Aka-TNO, CB-Alta, nOnt-nQ, TN-Lab
ONTARIO: Baies d’Hudson et de James
CARTE: Hultén 1968, Meusel et al. 1965, Porsild 1964

15

Arisaema dracontium (L.)Schott

SOURCES: Cruise 1969, IBP-CT 1974, Kershaw 1976,
Stewart & James 1969 et carte

REPARTITION: soOnt-soQ (Boivin 1967)

CARTE: Marie-Victorin 1931

CONDITIONS: Rare au Canada. En voie de disparition
dans le New Hampshire (Hodgdon 1973). Rare dans
le Minnesota (Morley 1972).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976, Zander 1976).

Aristida basiramea Engelm.
SOURCES: Catling et al. 1977, Reznicek 1975-76 et carte
REPARTITION: soOnt
ONTARIO: Cté de Norfolk et cté de Simcoe
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U
CONDITIONS: Rare au Canada.

Aristida dichotoma Michx.

SOURCES: Catling et al. 1977, Kershaw 1976, et carte

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Port Colborne

CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

CONDITIONS: Rare au Canada; peut-étre éliminée de
l'Ontario (Dore & McNeil 1976). Menacée d'extinction
dans le Michigan (Wagner 1976).

Aristida longespica Poir.
SOURCES: Catling et al. 1977, Reznicek 1975-76 et carte
REPARTITION: soOnt
ONTARIO: Cté de Kent
CARTE: Dore & McNeill 1976 Ont
CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Michigan (Wagner 1976).

Aristida necopina Shinners

Sources: Catling et al. 1977, Reznicek 1975-76 et carte

REPARTITION: soOnt

ONTARIO: Cté de Norfolk et cté de Kent

CARTE: Dore & McNeill 1976 Ont

CONDITIONS: Rare au Canada; peut-être allogène (Dore
& McNeill 1976). Menacée d’extinction dans le Michi-
gan (Wagner 1976).

Aristida purpurascens Poir.

Sources: Catling et al. 1977, Dore 1975, Kershaw 1976,
et carte

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Windsor

CarTE: Dore & McNeill 1976 Ont

CONDITIONS: Rare au Canada; peut-étre éliminée de
l'Ontario (Dore & McNeil 1976).

Armeria maritima (Mill.)Willd. ssp. labradorica
(Wall.)Lawr.
Sources: Moir 1958 et cartes
REPARTITION: TNO, nOnt-nQ, TN-Lab
ONTARIO: Baies d'Hudson et de James
CARTE: Hultén 1958, Lawrence 1947, Porsild 1964

16

Arnica alpina (L.)Olin ssp. angustifolia’ (Vahl)Maquire
Sources: Moir 1958, Reznicek 1975-76 et cartes
REPARTITION: Aka-TNO, nCB-nOnt-nQ (Boivin 1967)
ONTARIO: Baie d'Hudson
CARTE: Hultén 1958, Hultén 1968, Maguire 1943, Porsild

1964

Arnica chionopappa = A. lonchophylla ssp. chionopappa

Arnica lonchophylla Greene ssp. chionopappa

(Fern.)Maquire
(A. chionopappa Fern.)

SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
carte

REPARTITION: oOnt-sQ, NE, TN (Roland & Smith 1963-
69)

CARTE: Hultén 1968, Maguire 1943

Arnica lonchophylla Greene ssp. lonchophylla
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-noOnt
CARTE: Given & Soper 1976 Ont, Hultén 1968, Maguire
1943

Arnica whitneyi Fern.
SOURCES: Reznicek 1975-76 et cartes
REPARTITION: Ont
ONTARIO: Grands Lacs
CARTE: Given & Soper 1976 Ont, Hultén 1968
CONDITIONS: Rare au Canada. En voie de disparition
dans le Michigan (Wagner 1976).

Artemisia tilesii Ledeb. ssp. elatior (T.& G.)Hult.
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-Alta, Man, neOnt
ONTARIO: Baie de James
CARTE: Cody 1971, Hultén 1968, Porsild 1964

Asclepias exaltata L.
Sources: CAN, Kershaw 1976 et carte
REPARTITION: sOnt (Boivin 1967)
CARTE: Woodson 1954
CONDITIONS: Rare au Canada.

Asclepias hirtella (Pennell)Woodson
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Cté d’Essex
CARTE: Woodson 1954
CONDITIONS: Rare au Canada. Menacée d’extinction
dans le Michigan (Wagner 1976).

Asclepias lanuginosa Nutt.

(A. nuttalliana auct.)

SOURCES: Boivin 1967-72, Kershaw 1976, Reznicek
1975-76

REPARTITION: scMan-soOnt

CARTE: Woodson 1954

CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Wisconsin (Read 1976).

Asclepias nuttalliana = A. lanuginosa

Asclepias ovalifolia Dcne.
SOURCES: Reznicek 1975-76
REPARTITION: Alta-oOnt (Boivin 1967)
CARTE: Woodson 1954
CONDITIONS: Menacée d'extinction dans le Michigan
(Wagner 1976).

Asclepias purpurascens L.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Woodson 1954
CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976). Rare dans le Minne-
sota (Morley 1972).

Asclepias quadrifolia Jacq.
SOURCES: Beschel et al. 1970, Kershaw 1976 et carte
REPARTITION: sOnt (Boivin 1967)
CARTE: Woodson 1954
CONDITIONS: Rare au Canada. En voie de disparition
dans le New Hampshire (Hodgdon 1973).

Asclepias sullivantii Engelm.

SOURCES: Kershaw 1976 et carte

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Cté d'Essex

CARTE: Woodson 1954

CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976). Menacée d’extinction
dans le Michigan (Wagner 1976). Rare dans le Minne-
sota (Morley 1972).

Asclepias verticillata L.
SOURCES: Carte
REPARTITION: seSask-sMan, soOnt (Boivin 1967)
CARTE: Woodson 1954
CONDITIONS: Extrêmement rare dans l'ouest de l'Etat de
New York (Clinton Herbarium 1974).

Asclepias viridiflora Raf.
SOURCES: Carte
REPARTITION: sCB-sMan, sOnt (Boivin 1967, Boivin
1967-72)
CARTE: Woodson 1954
CONDITIONS: Rare au Canada.

Asimina triloba (L.)Dunal

Sources: Cruise 1969, IBP-CT 1974, Kershaw 1976,
Stewart & James 1969 et cartes

REPARTITION: sOnt

CARTE: Bowden & Miller 1951 Ont-nE-U, Fox & Soper
1952 Ont, Hosie 1969 Can, Soper & Heimburger 1976
Ont

CONDITIONS: Rare au Canada.

Asplenium cryptolepis = A. ruta-muraria ssp.
cryptolepis

Asplenium platyneuron (L.)Oakes
Sources: Beschel et al. 1970, Britton 1976, Brunton
1974-75, Catling 1974, FON 1969, Kershaw 1976,
Lafontaine & White 1974
REPARTITION: Ont-sQ (Boivin 1967)
CONDITIONS: Rare au Canada.

Asplenium ruta-muraria L. ssp. cryptolepis

(Fern.)Clausen & Wahl

SouRCES: Britton 1976, FON 1969, Kershaw 1976, Krot-
kov 1940, Lafontaine 1974, Soper 1963 et cartes

REPARTITION: scOnt

ONTARIO: Pén. Bruce et ile Manitoulin

CARTE: Fernald 1935, Given & Soper 1976 Ont, Hultén
1964

CONDITIONS: Rare au Canada. Eliminée dans l'Illinois
(Paulson & Schwegman 1976). Menacée d’extinction
dans le Michigan (Wagner 1976). Rare dans l'Indiana
(Barnes 1975).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976 et le Vermont (Vermont
1957, 1974).

Asplenium viride Huds.

Sources: Britton 1976, Catling 1974, FON 1969, IBP-CT
1974, Krotkov 1940 et cartes

REPARTITION: Aka-TNO, CB-Alta, Ont-TN

CARTE: Hultén 1964, Soper 1963 Ont

CONDITIONS: Peut-être éliminée dans le Wisconsin (Read
1976). Rare dans le Michigan (Wagner 1976).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976 et le Vermont (Vermont
1957, 1974).

Aster acuminatus Michx.
Sources: CAN, Reznicek 1975-76 et carte
REPARTITION: SOnt-TN (Boivin 1967)
CARTE: Dansereau 1952, Pike 1970

Aster divaricatus L.
Sources: Beschel et al. 1970, Cruise 1969, Kershaw
1976
REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Aster dumosus L.
Sources: Beschel et al. 1970
REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Aster lowrieanus Porter
SOURCES: Beschel et al. 1970, Cruise 1969, Stewart &
James 1969
REPARTITION: soOnt-soQ (Boivin 1967)
CONDITIONS: Rare au Canada.

Aster lutescens (Lindl.)T.& G.
(A. ptarmicoides(Nees)T.& G. var. lutescens
(Lindl.)Gray)
Sources: FON 1969, Krotkov 1940
REPARTITION: Sask-scOnt (Fernald 1950)
ONTARIO: Pén. Bruce

Aster ontarionis Wieg.
(A. tradescantii L. var. thyrsoides (Gray)Boivin)
SOURCES: Beschel et al. 1970, Lafontaine & White 1974
REPARTITION: Ont-Q (Boivin 1967)

17.

Aster pilosus Willd. var. demotus Blake
SOURCES: DAO, CAN
REPARTITION: SOnt (Boivin 1967)
ONTARIO: Ile Toronto
CONDITIONS: Rare et peut-être éliminée du Canada. Rare
dans le Minnesota (Morley 1972).

Aster prenanthoides Muhl.
SOURCES: Cruise 1969, Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Cté d’Elgin
CARTE: Shull 1904
CONDITIONS: Rare au Canada.

Aster ptarmicoides var. lutescens = A. lutescens

Aster sericeus Vent.
SOURCES: Kershaw 1976, Reznicek 1975-76
REPARTITION: SMan-oOnt (Boivin 1967)
CARTE: Bare & McGregor 1970 cE-U
CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Michigan (Wagner 1976). Rare dans l'Indiana
(Barnes 1975).

Aster shortii Lindl.
SOURCES: Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Pointe Pelée
CARTE: Avers 1953
CONDITIONS: Rare au Canada. Rare dans le Minnesota
(Morley 1972).

Aster subulatus Michx.
Sources: DAO, Kershaw 1976
REPARTITION: soOnt, NB (Boivin 1967)
ONTARIO: Windsor
CONDITIONS: Rare au Canada.

Aster tradescantii var. thyrsoides = A. ontarionis

Aster undulatus L.
SOURCES: Cruise 1969, Soper 1975-76 et carte
REPARTITION: sOnt, soNE (Boivin 1967)
CARTE: Avers 1953
CONDITIONS: Rare au Canada. Rare dans le Minnesota
(Morley 1972).

Aster vimineus Lam.
Sources: Beschel et al. 1970, Kershaw 1976, Stewart &
James 1969
REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Astragalus adsurgens Pall. var. robustior Hook.
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-Man, ncOnt
ONTARIO: Lac Supérieur
CARTE: Barneby 1964, Hultén 1968

Astragalus agrestis Dougl.
SOURCES: Cartes
REPARTITION: Y-TNO, CB-Man, neOnt
ONTARIO: Baie de James
CARTE: Barneby 1964, Hultén 1968

18

Astragalus americanus (Hook.)M.E.Jones
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-nOnt
ONTARIO: Baie d'Hudson
CARTE: Barneby 1964, Hultén 1968

Astragalus eucosmus Robins.
Sources: Reznicek 1975-76 et cartes
REPARTITION: Aka-Y, CB-Sask, Man, nOnt
ONTARIO: Baies d’Hudson et de James
CARTE: Barneby 1964, Hultén 1968, Porsild 1964

Astragalus neglectus (T.& G.)Sheldon
Sources: Beschel et al. 1970, Cruise 1969 et carte
REPARTITION: seMan-Ont (Boivin 1967-72)
CARTE: Barneby 1964
CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976).

Athyrium pycnocarpon (Spreng.)Tid.

Sources: Beschel et al. 1970, Britton 1976, Brunton
1974-75, Catling 1974, FON 1969

REPARTITION: Ont-soQ (Boivin 1967)

CARTE: Raymond 1950b eCan

CONDITIONS: En voie de disparition dans le New Hamp-
shire (Hodgdon 1973). Menacée d’extinction dans le
Wisconsin (Read 1976). Rare dans le Minnesota (Mor-
ley 1972). 4

PROTECTION: Protégée par la loi dans |’Etat de New York
(McGaugh & Genoways 1976).

Aureolaria flava (L.)Farw.
(Agalinis flava (L.)Boivin)
SOURCES: Cruise 1969, Kershaw 1976 et cartes
REPARTITION: soOnt
CARTE: Pennell 1935, Soper 1962 Ont
CONDITIONS: Rare au Canada.

Aureolaria pedicularia (L.)Raf.
SOURCES: Cruise 1969, Kershaw 1976 et cartes
REPARTITION: soOnt
CARTE: Pennell 1935, Soper 1962 Ont
CONDITIONS: Rare au Canada. Rare dans le Minnesota et
l'Indiana (Morley 1972, Barnes 1975).

Aureolaria virginica (L.)Pennell
SOURCES: Cruise 1969, Kershaw 1976 et cartes
REPARTITION: soOnt
ONTARIO: Région de Niagara et cté de Waterloo
CARTE: Pennell 1935, Soper 1962 Ont
CONDITIONS: Rare au Canada.

Azolla caroliniana Willd.

SOURCES: Kershaw 1976, Soper 1975-76

REPARTITION: soOnt

ONTARIO: Hamilton

CONDITIONS: Rare et peut-être éliminée du Canada (So-
per 1949). Rare dans l'Indiana (Barnes 1975).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Baptisia tinctoria (L.)R.Br.
SOURCES: Kershaw 1976 et cartes
REPARTITION: soOnt
CARTE: Larisey 1940, Soper 1962 Ont
CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976). Rare dans le Minne-
sota et l'Indiana (Morley 1972, Barnes 1975).

Bartonia paniculata Michx. ssp. paniculata
SOURCES: Cartes
REPARTITION: sOnt
ONTARIO: Dist. de Muskoka
CARTE: Gillett 1959, Reznicek & Whiting 1975 Ont
CONDITIONS: Rare au Canada.

Bartonia virginica L.

SOURCES: Kershaw 1976, Wellwood 1975 et cartes

REPARTITION: sOnt, soQ, NE

CARTE: Gillett 1959, Gillett 1963, Reznicek & Whiting
1975 Ont. Soper 1960 Ont

CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Wisconsin (Read 1976). Rare dans le Minne-
sota (Morley 1972).

Bartsia alpina L.
Sources: Moir 1958, Reznicek 1975-76 et carte
REPARTITION: eTNO, nMan-nOnt-Q, TN-Lab
CARTE: Hultén 1958, Porsild 1964

Berula erecta (Huds.)Cov. var. incisa (Torr.)Cronq.
SOURCES: Kershaw 1976
REPARTITION: SCB, soOnt (Boivin 1967)
ONTARIO: Port Colborne
CONDITIONS: Rare au Canada; peut-être éliminée de
l'Ontario (Scoggan 1976).

Betula lenta L.
SOURCES: Kershaw 1976 et cartes
REPARTITION: soOnt
ONTARIO: Port Dalhousie
CARTE: Fox & Soper 1954 Ont, Hosie 1969 Can, Little
1971, Soper 1960 Ont
CONDITIONS: Rare au Canada.

Bidens coronata (L.)Britt.
SOURCES: Cruise 1969, Kershaw 1976
REPARTITION: SOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Bidens discoidea (T.& G.)Britt.
SOURCES: Beschel et al. 1970
REPARTITION: SOnt-Q, NE (Boivin 1967)
CONDITIONS: Rare au Canada. Rare dans le Minnesota
(Morley 1972).

Blephilia ciliata (L.)Benth.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Île Pelée et lac Ste-Clair
CARTE: Soper 1960 Ont
CONDITIONS: Rare au Canada.

Blephilia hirsuta (Pursh)Benth.
SOURCES: Carte
REPARTITION: soOnt-s0Q (Boivin 1967)
ONTARIO: Cté de Lambton
CARTE: Soper 1960 Ont
CONDITIONS: Extrêmement rare dans l'ouest de l'Etat de
New York (Clinton Herbarium 1974).

Botrychium lanceolatum (Gmel.)Rupr. var.

angustisegmentum Pease & Moore

Sources: Beschel et al. 1970, Britton 1976, Brunton
1974-75 et cartes

REPARTITION: Ont-TN

CARTE: Clausen 1938, Hultén 1958, Hultén 1968

CONDITIONS: Menacée d'extinction dans le Wisconsin
(Read 1976). Extrêmement rare dans l'ouest de l'Etat
de New York (Clinton Herbarium 1974). Rare dans le
Minnesota (Morley 1972).

Bouteloua curtipendula (Michx.)Torr.
SOURCES: Reznicek 1975-76 et carte
REPARTITION: SeSask-sOnt (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Gould & Kapadia 1962
CONDITIONS: Menacée d’extinction dans le Michigan
(Wagner 1976).

Bromus pubescens Muhl.
(B. purgans auct.)
SOURCES: Beschel et al. 1970, Dore 1959, Stewart &
James 1969 et carte
REPARTITION: TNO, Alta-sOnt-NB (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Wagnon 1952

Bromus pumpellianus Scribn.
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-Man, Ont
CARTE: Dore & McNeill 1976 Ont, Elliot 1949, Guire &
Voss 1963 Grands Lacs

Bromus purgans = B. pubescens

Buchnera americana L.
SOURCES: Kershaw 1976 et cartes
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Cté de Lambton
CARTE: Pennell 1935, Soper 1962 Ont
CONDITIONS: Rare au Canada. Eliminée dans le Michigan
(Wagner 1976). Rare dans l'Indiana (Barnes 1975).

Bulbostylis capillaris (L.)C.B.Clarke
SOURCES: Beschel et al. 1970, Brunton 1974-75, Cruise
1969, IBP-CT 1974, Reznicek 1975-76 et carte
REPARTITION: Ont-soQ (Boivin 1967)
CARTE: Kral 1971 E-U, Soper 1960 Ont
CONDITIONS: Rare au Canada.

Cacalia tuberosa Nutt.

Sources: FON 1969, Kershaw 1976, Krotkov 1940 et
carte

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Cté d’Huron et cté de Bruce

CARTE: Soper 1977 Ont

CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Wisconsin (Read 1976).

19

Calamagrostis lacustris (Kearn.)Nash
SOURCES: Dore & McNeill 1976, Reznicek 1975-76, So-
per 1975-76 et carte
REPARTITION: nOnt-0Q, soTN (Fernald 1950)
CARTE: Dutilly & Lepage 1963 Ont-Q
CONDITIONS: Menacée d'extinction dans le Michigan
(Wagner 1976).

Calamagrostis purpurascens R.Br.
SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
cartes
REPARTITION: Aka-TNO, CB-ncOnt-Q, TN (Boivin 1967)
ONTARIO: Lac Supérieur
CARTE: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964, Raup 1947

Calamovilfa longifolia (Hook.)Scribn. var. longifolia
Sources: Dore & McNeill 1976, FON 1969, Krotkov 1940
et cartes
REPARTITION: SCB-Ont (Boivin 1967)
CARTE: Thieret 1960, Thieret 1966
CONDITIONS: Menacée d’extinction dans le Wisconsin
(Read 1976). Rare dans I'Indiana (Barnes 1975).

Calamovilfa longifolia (Hook.)Scribn. var. magna

Scribn.& Merr.

SOURCES: Cartes

REPARTITION: sOnt (Boivin 1967)

ONTARIO: Lac Huron

CARTE: Dore & McNeill 1976 Ont, Thieret 1960, Thieret
1966

CONDITIONS: Rare au Canada.

Caltha natans Pall.
SOURCES: Reznicek 1975-76, Senn 1941 et carte
REPARTITION: Aka, TNO, CB-Man, oOnt (Boivin 1967)
CARTE: Hultén 1968

Camassia scilloides (Raf.)Cory

Sources: CAN, Kershaw 1976 et cartes

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Cté d’Essex

CARTE: Gould 1942, Soper 1960 Ont, Wood 1970

CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976). Menacée dans le
Michigan et la Pennsylvanie (Wagner 1976, Wherry
1975).

Campanula americana L.
Sources: Beschel et al. 1970, Cruise 1969, Kershaw
, 1976, Stewart & James 1969 et carte
REPARTITION: sOnt (Boivin 1967)
CARTE: Fernald 1941
CONDITIONS: Rare au Canada.

Campsis radicans (L.)Seem.
Sources: Beschel et al. 1970, Kershaw 1976 et cartes
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Cté d’Essex et cté de Kent
CARTE: Soper 1956 Ont, Soper & Heimburger 1976 Ont
CONDITIONS: Rare au Canada; éliminée en Ontario mais
cultivée (Dore 1975, Soper 1956).

20

Cardamine douglasii Britt.
Sources: Kershaw 1976
REPARTITION: sOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Carex amblyorhyncha Krecz.
Sources: Cartes
REPARTITION: Aka-TNO, nMan-nOnt-nQ
ONTARIO: Baies d'Hudson et de James
CARTE: Dutilly et al. 1958, Hultén 1964, Hultén 1968,
Porsild 1964

Carex amphibola var. turgida = C. grisea

Carex atrata L.
SOURCES: Cartes
REPARTITION: Aka, CB-Alta, nOnt, Q
CARTE: Given & Soper 1976 Ont, Hultén 1958, Raymond
1950a eCan

Carex atrofusca Schkuhr
Sources: Moir 1958 et cartes
REPARTITION: Aka-TNO, nOnt-Q
ONTARIO: Baies d'Hudson et de James
CARTE: Hultén 1964, Porsild 1964

Carex careyana Torr.
SouRCES: Kershaw 1976, Reznicek 1975-76
REPARTITION: sOnt (Fernald 1950)
CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976). Menacée dans la
Pennsylvanie (Wherry 1975).

Carex conoidea Schkuhr

(C. katahdinensis Fern.)

Sources: Beschel et al. 1970, Kershaw 1976, Reznicek
1975-76 et carte

REPARTITION: Ont-NB, NE, TN (Boivin 1967)

CARTE: Raymond 1951 eCan

CONDITIONS: Rare dans le Minnesota et I’Indiana (Morley
1972, Barnes 1975).

Carex davisii Schwein.& Torr.
SOURCES: Campbell & Reznicek 1976, Kershaw 1976
REPARTITION: soOnt-Q
ONTARIO: Ile Pelée
CONDITIONS: Rare au Canada. Rare dans le Minnesota et
le Michigan (Morley 1972, Wagner 1976).

Carex folliculata L.
Sources: Beschel et al. 1970
REPARTITION: Ont-TN (Boivin 1967)
CONDITIONS: Menacée d'extinction dans le Wisconsin
(Read 1976). Rare dans le mid-ouest des Etats-Unis
(Barnes, Tans & Read 1975).

Carex formosa Dewey
SOURCES: Beschel et al. 1970, Kershaw 1976
REPARTITION: SOnt-soQ (Boivin 1967)
CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976). Rare dans le Minne-
sota (Morley 1972).

Carex frankii Kunth
SOURCES: Kershaw 1976, Reznicek 1975-76
REPARTITION: sOnt
CONDITIONS: Rare au Canada. Rare dans le Michigan
(Wagner 1976).

Carex gravida Bailey
SOURCES: Kershaw 1976, Reznicek 1975-76
REPARTITION: seSask, soOnt (Boivin 1967)
CONDITIONS: Rare au Canada. Rare dans le Michigan et
l'Indiana (Wagner 1976, Barnes 1975).

Carex grisea Wahl.
(C. amphibola Steud. var. turgida Fern.)
Sources: Brunton 1974-75, Cruise 1969
REPARTITION: SOnt-NB (Boivin 1967)

Carex haydenii Dewey
Sources: Beschel et al. 1970, Brunton 1974-75, Rezni-
cek 1975-76
REPARTITION: Ont-NB (Boivin 1967)
CONDITIONS: Rare dans le Michigan (Wagner 1976).

Carex heleonastes L.f.
SOURCES: Kershaw 1976, Kershaw & Morton 1976, Rez-
nicek 1975-76 et cartes
REPARTITION: Aka-TNO, Alta-Man, nOnt-nQ (Boivin
1967)
ONTARIO: Disjoint Baie de James et Lac Supérieur
CARTE: Hultén 1964, Hultén 1968

Carex hirsutella Mack.
SOURCES: Kershaw 1976, Reznicek 1975-76
REPARTITION: Ont-soQ (Boivin 1967)
CONDITIONS: Rare au Canada.

Carex hookerana Dewey
SOURCES: Reznicek 1975-76 et carte
REPARTITION: Alta-oOnt (Boivin 1967)
CARTE: Given & Soper 1976 Ont

Carex jamesii Schwein.
SOURCES: Kershaw 1976, Reznicek 1975-76
REPARTITION: sOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Carex katahdinensis = C. conoidea

Carex laevivaginata (Kukenth.)Mack.
Sources: CAN, Kershaw 1976
REPARTITION: sOnt (Scoggan 1976)
ONTARIO: Cté de Grey et cté d’Ontario
CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976). Rare dans le Minne-
sota (Morley 1972).

Carex laxiculmis Schwein.
SOURCES: CAN, Kershaw 1976
REPARTITION: sOnt-Q (Boivin 1967)
CONDITIONS: Rare au Canada.

Carex laxiflora Lam. var. gracillima (Boott)Robins.&
Fern.
SOURCES: Reznicek 1975-76
REPARTITION: SOnt-soQ (Boivin 1967)

Carex leavenworthii Dewey
SOURCES: Kershaw 1976, Reznicek 1975-76
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Pointe Pelée
CONDITIONS: Rare au Canada.

Carex lupuliformis Sartw.
SOURCES: Kershaw 1976, Reznicek 1975-76 et carte
REPARTITION: soOnt, soQ (Boivin 1967)
ONTARIO: Galt
CARTE: Reznicek & Ball 1974
CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976).

Carex miliaris Michx.
(C. saxatilis L. var. miliaris (Michx.)Bailey)
Sources: Moir 1958 et cartes
REPARTITION: nMan-nOnt-Q, Lab
CARTE: Hultén 1964, Porsild 1964

Carex muskingumensis Schwein.
SOURCES: Kershaw 1976, Reznicek 1975-76
REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Carex nigra (L.)Reichard
SOURCES: Carte
REPARTITION: neOnt-Q, NB-Lab
ONTARIO: Baie de James
CARTE: Hultén 1958

Carex novae-angliae Schwein.
Sources: Reznicek 1975-76
REPARTITION: Ont-NE, TN (Boivin 1967)

Carex oligocarpa Schkuhr
SOURCES: Beschel et al. 1970, Kershaw 1976, Reznicek
1975-76
REPARTITION: SOnt-soQ (Boivin 1967)
CONDITIONS: Rare au Canada. Rare dans le Michigan
(Wagner 1976).

Carex prasina Wahl.
Sources: Beschel et al. 1970, Reznicek 1975-76
REPARTITION: SOnt-soQ (Boivin 1967)
CARTE: Raymond 1950b eCan
CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976).

Carex richardsonii R.Br.
SOURCES: Reznicek 1975-76 et carte
REPARTITION: CB-Q (Boivin 1967)
CARTE: Raup 1930
CONDITIONS: Menacée d'extinction dans le Wisconsin
(Read 1976). Rare dans le Michigan et l'Indiana (Wa-
gner 1976, Barnes 1975).

PA

Carex rossii Boott

SOURCES: Cartes

REPARTITION: Aka-TNO, CB-Man, ncOnt

ONTARIO: Dist. de Thunder Bay

CARTE: Given & Soper 1976 Ont, Hultén 1968, Raup
1930

CONDITIONS: Rare dans le Minnesota et le Michigan
(Morley 1972, Wagner 1976).

Carex saxatilis var. miliaris = C. miliaris

Carex schweinitzii Dewey
SOURCES: Kershaw 1976, Scoggan 1976
REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976).

Carex shortiana Dewey
SOURCES: Kershaw 1976, Reznicek 1975-76 et carte
REPARTITION: soOnt (Boivin 1967)
ONTARIO: River Canard
CARTE: Meusel et al. 1965
CONDITIONS: Rare au Canada.

Carex squarrosa L.
(C. typhina Michx.)
SOURCES: Kershaw 1976, Reznicek 1975-76
REPARTITION: SOnt-soQ (Boivin 1967)
CARTE: Raymond 1950b PQ
CONDITIONS: Rare dans le Michigan (Wagner 1976).

Carex supina Willd. ssp. spaniocarpa (Steud.)Hult.
SOURCES: Kershaw & Morton 1976 et cartes
REPARTITION: Aka-TNO, CB-Alta, Man, ncOnt, Q
ONTARIO: Lac Supérieur
CARTE: Given & Soper 1976 Ont, Hultén 1964, Porsild

1964

Carex swanii (Fern.)Mack.
SOURCES: Kershaw 1976, Reznicek 1975-76
REPARTITION: Ont-Q, NE
CARTE: Raymond 1951 eCan
CONDITIONS: Rare au Canada. Peut-être éliminée dans
le Wisconsin (Read 1976).

Carex tetanica Schkuhr var. woodii (Dewey)Wood
(C. woodii Dewey)
SOURCES: Beschel et al. 1970, Kershaw 1976
REPARTITION: Man-Ont (Boivin 1967)
CONDITIONS: Rare au Canada. Rare dans l'Indiana (Bar-
nes 1975).

Carex torta Boott
SOURCES: Reznicek 1975-76
REPARTITION: Ont-NB, NE (Boivin 1967)

Carex trichocarpa Muhl.

Sources: Beschel et al. 1970, Kershaw 1976, Reznicek
1975-76

REPARTITION: soOnt-soQ (Boivin 1967)

CARTE: Core 1968

CONDITIONS: Rare au Canada. Rare dans le Minnesota,
le Michigan et l'Indiana (Morley 1972, Wagner 1976,
Barnes 1975).

22

Carex typhina = C. squarrosa

Carex virescens Muhl.
Sources: Reznicek 1975-76
REPARTITION: SOnt-soQ, NE (Boivin 1967)

Carex willdenowii Schkuhr
SOURCES: Kershaw 1976
REPARTITION: sOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Carex woodii = C. tetanica var. woodii

Carya glabra (Mill.)Sweet
SOURCES: Kershaw 1976, Lafontaine 1974 et cartes
REPARTITION: soOnt
CARTE: Fox & Soper 1954 Ont, Hosie 1969 Can, Little
1971
CONDITIONS: Rare au Canada.

Carya laciniosa (Michx.)Loud.

Sources: IBP-CT 1974, Kershaw 1976, Lafontaine 1974
et cartes

REPARTITION: soOnt

CARTE: Fox & Soper 1954 Ont, Hosie 1969 Can, Little
1971, Soper 1960 Ont

CONDITIONS: Rare au Canada. Rare dans le Michigan
(Wagner 1976).

Cassia hebecarpa Fern.

(C. marilandica auct.)

SOURCES: Kershaw 1976 et cartes

REPARTITION: soOnt (Boivin 1967)

CARTE: Soper 1956 Ont, Soper 1960 Ont

CONDITIONS: Rare au Canada. Extrémement rare dans
l'ouest de l'Etat de New York (Clinton Herbarium
1974).

Cassia marilandica = C. hebecarpa

Castanea dentata (Marsh.)Borkh.

Sources: Cruise 1969, IBP-CT 1974, Kershaw 1976,
Stewart & James 1969 et cartes

REPARTITION: soOnt (Boivin 1967)

CARTE: Baxter 1930, Fox & Soper 1953 Ont, Hosie 1969
Can, Soper 1960 Ont

CONDITIONS: En voie de disparition dans le Michigan
(Wagner 1976).

PROTECTION: Protégée par la loi dans l’Indiana (Mc-
Gaugh & Genoways 1976).

Castilleja raupii Pennell
Sources: Moir 1958 et cartes
REPARTITION: Aka-TNO, CB-nOnt, Q (Boivin 1967)
CARTE: Hultén 1968, Pennell 1934

Catabrosa aquatica (L.)Beauv.
SOURCES: Carte
REPARTITION: TNO, CB-nOnt-IPE, Lab (Boivin 1967)
ONTARIO: Baies d'Hudson et de James
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

Celtis tenuifolia Nutt.

SOURCES: Kershaw 1976 et cartes

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Cté de Lambton

CARTE: Fox & Soper 1953 Ont, Hosie 1969 Can, Soper &
Heimburger 1976 Ont

CONDITIONS: Rare au Canada. Rare dans le Michigan
(Wagner 1976).

Cenchrus longispinus (Hackel)Fern.
(C. pauciflorus Benth.)
CONDITIONS: Stewart & James 1969 et cartes
REPARTITION: sOnt (Boivin 1967)
CARTE: DeLisle 1963, Dore & McNeill 1976 Ont, Soper
1962 Ont
CONDITIONS: Rare au Canada.

Cenchrus pauciflorus = C. longispinus

Cerastium alpinum L.
Sources: Moir 1958 et cartes
REPARTITION: TNO, Man-nOnt-nQ, TN-Lab
ONTARIO: Baies de Hudson et de James
CARTE: Hultén 1956, Hultén 1958, Meusel et al. 1965,
Porsild 1964

Cerastium beeringianum C.& S.
SOURCES: Kershaw & Morton 1976 et cartes
REPARTITION: Aka-TNO, CB-Alta, ncOnt, Q, TN-Lab
ONTARIO: Lac Supérieur
CARTE: Given & Soper 1976 Ont, Hultén 1956, Hultén
1968, Porsild 1964, Raup 1947

Cercis canadensis L.

Sources: IBP-CT 1974, Kershaw 1976 et cartes

REPARTITION: soOnt

ONTARIO: Île Pelée

CARTE: Fox & Soper 1953 Ont, Hopkins 1942, Hosie 1969
Can, Soper 1956 Ont

CONDITIONS: Rare au Canada; éliminée en Ontario mais
cultivée (Dore 1975, Soper 1956).

Chaerophyllum procumbens (L.)Crantz.

SOURCES: Kershaw 1976 et carte

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Cté d’Essex

CARTE: Soper 1962 Ont

CONDITIONS: Rare au Canada; peut-être éliminée de
l'Ontario (Soper 1962). Menacée d'extinction dans le
Wisconsin (Read 1976).

Chamaelirium luteum (L.)Gray
SOURCES: Cruise 1969, Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Segelken 1929, Soper 1962 Ont
CONDITIONS: Rare au Canada.

Chenopodium foggii Wahl
SOURCES: Gaiser & Moore 1966, Kershaw 1976
REPARTITION: SOnt-sQ (Wahl 1954)
CONDITIONS: Rare au Canada.

Chimaphila maculata (L.)Pursh

Sources: Catling 1974, Cruise 1969, IBP-CT 1974, Ker-
shaw 1976 et cartes

REPARTITION: SOnt (Boivin 1967)

CARTE: Segelken 1929, Soper 1960 Ont, Soper & Heim-
burger 1976 Ont, Zander 1976 Lac Erie

CONDITIONS: Rare au Canada. En voie de disparition
dans le New Hampshire (Hodgdon 1973). Se trouve
dans la Nouvelle-Angleterre dans des populations
isolées de quelques individus (Hodgdon & Eastman
1973). Rare dans le Michigan (Wagner 1976).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976, Zander 1976).

Chrysanthemum arcticum L. ssp. polare Hult.
SOURCES: Moir 1958 et cartes
REPARTITION: Aka-TNO, nMan-nOnt-nQ
ONTARIO: Baies d’Hudson et de James
CARTE: Hultén 1968, Hultén 1971

Chrysanthemum bipinnatum ssp. huronense =
Tanacetum huronense

Cimicifuga racemosa (L.)Nutt.
SOURCES: Cruise 1969, Kershaw 1976 et cartes
REPARTITION: soOnt (Boivin 1967)
CARTE: Lloyd & Lloyd 1931, Soper 1962 Ont
CONDITIONS: Rare au Canada.

Cinna arundinacea L.
SOURCES: Beschel et al. 1970, Cruise 1969, Dore 1959 et
carte
REPARTITION: SOnt-soQ (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont
CONDITIONS: Rare au Canada.

Cirsium drummondii T.& G.
SOURCES: Carte
REPARTITION: TNO, CB-Man, nOnt (Boivin 1967)

CARTE: Moore and Frankton 1964, Moore & Frankton
1974 Can

Cirsium pitcheri (Torr.)T.& G.

Sources: FON 1969, Kershaw 1976, Kershaw & Morton
1976, Krotkov 1940 et cartes

REPARTITION: Ont

ONTARIO: Grands Lacs

CARTE: Given & Soper 1976 Ont, Guire & Voss 1963,
Johnson & Iltis 1963, Moore & Frankton 1974 Can,
Soper 1977 Ont.

CONDITIONS: Rare au Canada. En voie de disparition
dans l'Illinois (Paulson & Schwegman 1976). Menacée
dans le Wisconsin et le Michigan (Read 1976, Wagner
1976). Rare dans |’Indiana (Barnes 1975).

23

Cirsium pumilum (Nutt.)Spreng. ssp. hillii (Canby)Moore
& Frankton

SOURCES: FON 1969, Kershaw 1976, Kershaw & Morton
1976, Krotkov 1940 et carte

REPARTITION: Ont

ONTARIO: Grands Lacs

CARTE: Moore & Frankton 1966, Moore & Frankton 1974
Can, Soper 1977 Ont

CONDITIONS: Rare au Canada. Menacée dans le Wiscon-
sin et le Michigan (Read 1976, Wagner 1976).

Collinsia parviflora Lindl.

SOURCES: Kershaw 1976, Kershaw & Morton 1976, Rez-
nicek 1975-76 et cartes

REPARTITION: Y, CB-Sask, Man, Ont (Boivin 1967)
ONTARIO: Grands Lacs
CARTE: Given & Soper 1976 Ont, Hultén 1968

Collinsia verna Nutt.

SOURCES: Kershaw 1976, Stewart & James 1969 et carte

REPARTITION: soOnt (Boivin 1967)

CARTE: Pennell 1935

CONDITIONS: Rare au Canada. Peut-être éliminée dans
le Wisconsin (Read 1976). Menacée d’extinction dans
le Michigan (Wagner 1976). Extrêmement rare dans
l'ouest de l'Etat de New York (Clinton Herbarium
1974).

Collinsonia canadensis L.

SOURCES: Cruise 1969, Kershaw 1976, Stewart & James
1969 et carte

REPARTITION: soOnt (Boivin 1967)
CARTE: Soper 1962 Ont

CONDITIONS: Rare au Canada. Peut-être éliminée dans
le Wisconsin (Read 1976).

Collomia linearis Nutt.
SOURCES: Reznicek 1975-76 et cartes

REPARTITION: Aka-TNO, CB-Man, Ont, Q, NE (Boivin
1967)

CARTE: Hultén 1968, Wherry 1936
Colpodium fulvum = Arctophila fulva

Conobea multifida (Michx.)Benth.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Ile Pelée
CARTE: Pennell 1935, Soper 1962 Ont
CONDITIONS: Rare au Canada.

Conopholis americana (L.)Wallr.

Sources: Beschel et al. 1970, Boivin 1967-72, Cruise
1969, FON 1969, IBP-CT 1974 et carte

REPARTITION: Man-Q, NE (Boivin 1967)
CARTE: Haynes 1971
CONDITIONS: Rare au Canada.

24

Corallorhiza odontorhiza (Willd.)Nutt.

SOURCES: Catling & Whiting 1976, Cruise 1969, Kershaw
1976, et cartes

REPARTITION: soOnt (Boivin 1967)

CARTE: Case 1964 Grands Lacs, Luer 1975

CONDITIONS: Rare au Canada; en voie de disparition en
Ontario (Catling & Whiting 1976) Menacée d’extinc-
tion dans le Wisconsin (Read 1976). Rare dans le
Minnesota (Morley 1972).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d'expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans le Minnesota,
le Wisconsin, l'Etat de New York (McGaugh & Geno-
ways 1976)

Coreopsis lanceolata L.
Sources: Catling et al. 1975
REPARTITION: CB, Ont (Boivin 1967)
ONTARIO: Grands Lacs

Coreopsis tripteris L.
Sources: Catling 1976b, Kershaw 1976, Scoggan 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Cté d'Essex
CONDITIONS: Rare au Canada. Menacée d’extinction
dans le Wisconsin (Read 1976). Rare dans le Minne-
sota (Morley 1972).

Corispermum hyssopifolium L.
Sources: CAN, Cruise 1969
REPARTITION: TNO, CB-Ont-Q (Boivin 1967)
ONTARIO: Grands Lacs
CONDITIONS: Rare dans |’Indiana (Barnes 1975).

Cornus drummondii E.Mey.
SOURCES: Cruise 1969, Kershaw 1976 et cartes
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Cté d’Essex et cté de Norfolk
CARTE: Soper & Heimburger 1961 Ont, Soper & Heimbur-
ger 1976 Ont, Wilson 1964
CONDITIONS: Rare au Canada.

Cornus florida L.

Sources: Catling 1974, Cruise 1969, IBP-CT 1974, Ker-
shaw 1976, Stewart & James 1969 et cartes

REPARTITION: soOnt

CARTE: Fox & Soper 1952 Ont, Hosie 1969 Can, Little
1971, Soper & Heimburger 1976 Ont

CONDITIONS: Rare au Canada.

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976, Zander 1976).

Corydalis flavula (Raf.)DC.
SOURCES: Campbell 1976, Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Pointe Pelée et ile Pelée
CARTE: Ownbey 1947
CONDITIONS: Rare au Canada. Extrémement rare dans

l'ouest de l'Etat de New York (Clinton Herbarium
1974).

Crataegus douglasii Lindl.
SOURCES: Cartes
REPARTITION: Aka, CB-Sask, Ont (Boivin 1967)

CARTE: Given & Soper 1976 Ont, Hultén 1968, Soper &
Heimburger 1976 Ont

CONDITIONS: Rare dans le Minnesota et le Michigan
(Morley 1972, Wagner 1976).

Cryptogramma crispa (L.)R.Br. var. acrosticoides
(R.Br.)C.B.Clarke

SOURCES: Britton 1976 et cartes
REPARTITION: Aka-TNO, CB-Man, Ont (Boivin 1967)
ONTARIO: Grands Lacs

CARTE: Given & Soper 1976 Ont, Hultén 1958, Soper
1960 Ont

Cyperus engelmannii Steud.
Sources: Beschel et al. 1970, Kershaw 1976
REPARTITION: sOnt (Boivin 1967)

CONDITIONS: Rare au Canada. Menacée dans la Pennsyl-
vanie (Wherry 1975).

Cyperus erythrorhizos Muhl.
SOURCES: Cruise 1969, Kershaw 1976, Reznicek 1975-
76
REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Cyperus ferruginescens Boeck.
SOURCES: Beschel et al. 1970, Kershaw 1976, Reznicek
1975-76
REPARTITION: soOnt-Q (Boivin 1967)
CONDITIONS: Rare au Canada.

Cyperus houghtonii Torr.
Sources: Beschel et al. 1970
REPARTITION: seMan-s0Q (Boivin 1967)

CONDITIONS: Menacée dans le Wisconsin et la Pennsylva-
nie (Read 1976, Wherry 1975).

Cypripedium arietinum R.Br.

Sources: Beschel et al. 1970, Brunton 1974-75, Catling
1974, Cruise 1969, FON 1969, IBP-CT 1974 et cartes

REPARTITION: Man-Q, NE

CARTE: Ayensu 1975 E-U, Case 1964 Grands Lacs, Luer
1975, Soper 1977 Ont

CONDITIONS: Rare au Canada. Menacée d'extinction aux
Etats-Unis (Ayensu 1975, Smithsonian Institution
1975). En voie de disparition dans le Wisconsin et le
New Hampshire (Read 1976, Hodgdon 1973). Mena-
cée d’extinction dans le Michigan (Wagner 1976).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans le Minnesota,
le Wisconsin, l'Etat de New York (McGaugh & Geno-
ways 1976)

Cypripedium candidum Muh.

Sources: Catling & Whiting 1976, Catling 1974, Cruise
1969, IBP-CT 1974, Kershaw 1976, Kershaw & Mor-
ton 1976, Lafontaine 1974, Petrie 1976 et cartes

REPARTITION: Sask, Man, sOnt (Boivin 1967)

CARTE: Ayensu 1975 E-U, Case 1964 Grands Lacs, Luer
1975

CONDITIONS: Rare au Canada; en voie de disparition en
Ontario (Catling & Whiting 1976) Menacée d’extinc-
tion aux Etats-Unis (Ayensu 1975, Smithsonian Insti-
tution 1975). En voie de disparition dans le Wisconsin
et l'Illinois (Read 1976, Paulson & Schwegman 1976).
Menacée d'extinction dans le Michigan (Wagner
1976). Eliminée dans la Pennsylvania (Wherry 1975).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans le Minnesota,
le Wisconsin et l'Etat de New York (McGaugh & Geno-
ways 1976).

Cypripedium passerinum Richards.

SOURCES: Soper 1965 et cartes

REPARTITION: Aka-TNO, CB-nOnt-Q

ONTARIO: nOnt, disjoint Lac Supérieur

CARTE: Given & Soper 1976 Ont, Luer 1975, Raup 1947

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis

Cystopteris fragilis (L.)Bernh. var. laurentiana Weath.
SOURCES: Britton 1976
REPARTITION: Ont-Q, NE-TN, localisé (Boivin 1967)
ONTARIO: Grands Lacs
CONDITIONS: Rare dans le Michigan (Wagner 1976).

Cystopteris montana (Lam.)Bernh.
SOURCES: Kershaw & Morton 1976 et cartes
REPARTITION: Aka-TNO, CB-Alta, ncOnt, Q, TN, localisé
(Boivin 1967)
ONTARIO: Lac Supérieur
CARTE: Given & Soper 1976 Ont, Hultén 1958, Kershaw
1976, Porsild 1966

Danthonia compressa = D. sericea

Danthonia sericea Nutt.
(D. compressa Austin)
Sources: Dore 1959 et carte
REPARTITION: eOnt (Fernald 1950)
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U
CONDITIONS: Rare au Canada.

Deschampsia caespitosa (L.)Beauv. var. maritima Vasey
SOURCES: Carte
REPARTITION: Aka-TNO, nOnt
ONTARIO: Baies d’Hudson et de James
CARTE: Dore & McNeill 1976 Ont

25

Desmodium canescens (L.)DC.
SOURCES: Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
CARTE: Isely 1955
CONDITIONS: Rare au Canada.

Desmodium ciliare (Muhl.)DC.
SOURCES: CAN, Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Niagara Falls
CARTE: Isely 1955
CONDITIONS: Rare et peut-être éliminée du Canada.

Desmodium cuspidatum (Muhl.)Loud.
SOURCES: Cruise 1969, Kershaw 1976, Stewart & James
1969
REPARTITION: sOnt (Boivin 1967)
CONDITIONS: Rare au Canada. En voie de disparition
dans le New Hampshire (Hodgdon 1973).

Desmodium illinoense Gray
Sources: CAN, Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Komoka
CARTE: Isely 1955
CONDITIONS: Rare et peut-être éliminée du Canada. Rare
dans le Minnesota (Morley 1972).

Desmodium marilandicum (L.)DC.
SOURCES: CAN, Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Cté de Lambton
CARTE: Isely 1955
CONDITIONS: Rare au Canada. En voie de disparition
dans le New Hampshire (Hodgdon 1973).

Desmodium rotundifolium (Michx.)DC.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Isely 1955
CONDITIONS: Rare au Canada. En voie de disparition
dans le New Hampshire (Hodgdon 1973).

Desmodium sessilifolium (Torr.)T.& G.
SOURCES: Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Sandwich
CARTE: Isely 1955
CONDITIONS: Rare et peut-être éliminée du Canada. Me-
nacée dans la Pennsylvanie (Wherry 1975).

Dioscorea villosa L.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Soper 1956 Ont
CONDITIONS: Rare au Canada.

Disporum lanuginosum (Michx.)Nicholson
SOURCES: Cruise 1969, Kershaw 1976, Stewart & James
1969 et cartes
REPARTITION: soOnt (Boivin 1967)
CARTE: Jones 1951, Wood 1970
CONDITIONS: Rare au Canada.

26

Disporum trachycarpum (Wats.)B.& H.
SOURCES: Reznicek 1975-76
REPARTITION: CB-nOnt (Boivin 1967)
CARTE: Jones 1951, Wood 1970

Draba alpina L.
Sources: Mulligan 1975-76 et cartes
REPARTITION: Aka-TNO, nCB, neMan-nOnt-noQ (Mulli-
gan 1976)
ONTARIO: Baie d'Hudson
CARTE: Hultén 1968, Porsild 1964

Draba aurea Vahl
SOURCES: Kershaw & Morton 1976, Mulligan 1975-76 et
carte
REPARTITION: Aka-TNO, CB-nOnt-Q, Lab (Mulligan
1976)
ONTARIO: nOnt, disjoint Lac Supérieur
CARTE: Hultén 1968, Porsild 1966

Draba cana Rydb.
(D. lanceolata auct.)
SOURCES: Brunton & Lafontaine 1974a, FON 1969, Ker-
shaw 1976, Kershaw & Morton 1976 et cartes
REPARTITION: Aka-TNO, CB-soAlta, noSask, Ont, Q-NB
ONTARIO: Grands Lacs
CARTE: Hultén 1968, Mulligan 1971

Draba cinerea Adams
SOURCES: Cartes
REPARTITION: Aka-TNO, nCB, nSask, nOnt, Q
ONTARIO: Baie d’Hudson
CARTE: Hultén 1968, Mulligan 1971, Porsild 1964

Draba glabella Pursh

(D. hirta auct.)

Sources: Brunton 1974-75, Moir 1958, Reznicek 1975-
76 et cartes

REPARTITION: Aka-TNO, CB-Alta, Man-Ont-NB, NE-
Lab (Mulligan 1976)

ONTARIO: nOnt, disjoint île Manitoulin et cOnt

CARTE: Hultén 1968, Mulligan 1970, Porsild 1964, Raup
1947

Draba hirta = D. glabella

Draba incana L.
SOURCES: Moir 1958 et cartes
REPARTITION: nOnt-Q, IPE, TN-Lab (Mulligan 1976)
ONTARIO: nOnt, disjoint Lac Supérieur
CARTE: Given & Soper 1976 Ont, Hultén 1958
CONDITIONS: Menacée d'extinction dans le Michigan
(Wagner 1976).

Draba lanceolata = D. cana

Draba nivalis Liljebl.
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-Alta, Man-nOnt-Q, TN-Lab
ONTARIO: Baie d'Hudson
CARTE: Hultén 1968, Mulligan 1974, Porsild 1964

Draba reptans Lam.
SOURCES: Kershaw 1976, Mulligan 1975-76
REPARTITION: sAlta-sOnt (Mulligan 1976)
CONDITIONS: Menacée dans la Pennsylvanie (Wherry
1975);

Drosera linearis Goldie

SOURCES: Catling 1974, FON 1969, Krotkov 1940 et
cartes

REPARTITION: CB-Ont, Q, TN, localisé (Boivin 1967)

ONTARIO: Grands Lacs

CARTE: Cruise & Catling 1974 Ont, Wynne 1944

CONDITIONS: En voie de disparition dans le Wisconsin
(Read 1976). Rare dans le Minnesota (Morley 1972).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976, Zander 1976).

Dryas drummondii Richards.

SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
cartes

REPARTITION: Aka-TNO, CB-Sask, ncOnt, Q, TN (Boivin
1967)

ONTARIO: Lac Supérieur

CARTE: Given & Soper 1976 Ont, Hultén 1968, Porsild
1947

Dryas integrifolia Vahl
SOURCES: Moir 1958 et cartes
REPARTITION: Aka-TNO, CB-Alta, Man-nOnt-NB, TN-
Lab (Boivin 1967)
ONTARIO: nOnt, disjoint Lac Supérieur
CARTE: Given & Soper 1976 Ont, Hultén 1968, Porsild
1947, Savile 1961, Young 1971

Dryopteris filix-mas (L.)Schott

SOURCES: FON 1969 et cartes

REPARTITION: CB-Alta, Ont-Q, NE-TN (Boivin 1967)

ONTARIO: Grands Lacs

CARTE: Given & Soper 1976 Ont, Britton & Soper 1966
Ont, Hultén 1964

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Dryopteris goldiana (Hook.)Gray

SOURCES: Beschel et al. 1970, Britton 1976, Brunton
1974-75, Cruise 1969, FON 1969, Reznicek 1975-76
et carte

REPARTITION: SOnt-NB (Boivin 1967)

CARTE: Britton & Soper 1966 Ont, Wagner & Wagner
1965

CONDITIONS: Rare dans le Minnesota (Morley 1972).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Dryopteris hexagonoptera = Phegopteris hexagonoptera

Dryopteris robertiana = Gymnocarpium robertianum
Dupontia fisheri R.Br.
SOURCES: Cartes
REPARTITION: Aka-T NO, Man-nOnt-Q, Lab (Boivin 1967)
ONTARIO: Baies d’Hudson et de James
CARTE: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964

Echinochloa walteri (Pursh)Nash
Sources: Beschel et al. 1970, Cruise 1969, Dore 1959 et
carte
REPARTITION: SOnt-soQ (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Gould et al. 1972
CONDITIONS: Rare dans le Minnesota (Morley 1972).

Echinopanax horridum = Oplopanax horridus

Elatine minima (Nutt.)Fisch.& Mey.
Sources: CAN et carte
REPARTITION: Ont-NE, TN (Boivin 1967)
ONTARIO: Grands Lacs
CARTE: Fassett 1939

Eleocharis equisetoides (Ell.)Torr.

SouRCES: Cruise 1969, Kershaw 1976, Reznicek 1975-
76

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Longue Pointe

CARTE: Svenson 1939

CONDITIONS: Rare au Canada. Eliminée dans le Wiscon-
sin et l'Illinois (Read 1976, Paulson & Schwegman
1976). Rare dans l'Indiana (Barnes 1975).

Eleocharis geniculata (L.)R.& S.
Sources: Cruise 1969, Kershaw 1976, Pratt 1974, Rez-
nicek 1975-76
REPARTITION: SOnt (Fernald 1950)
ONTARIO: Grands Lacs
CONDITIONS: Rare au Canada. Rare dans l'Indiana (Bar-
nes 1975).

Eleocharis intermedia (Muhl.)Schult.
Sources: Beschel et al. 1970, CAN, DAO
REPARTITION: Ont-Q (Fernald 1950)
ONTARIO: Thunder Bay et sOnt

Eleocharis olivacea Torr.
Sources: Beschel et al. 1970, FON 1969, Krotkov 1940
et carte
REPARTITION: sOnt, Q, NE (Boivin 1967)
CARTE: Svenson 1939
CONDITIONS: Menacée d’extinction dans le Wisconsin
(Read 1976). Rare dans le Minnesota (Morley 1972).

Eleocharis parvula (R.& S.)Link
Sources: Brunton 1974-75 et carte
REPARTITION: CB, oOnt-TN (Boivin 1967)
CARTE: Hultén 1964, Svenson 1934
CONDITIONS: Eliminée dans le Michigan (Wagner 1976).

Eleocharis quadrangulata (Michx.)R.& S. var. crassior

Fern.

SOURCES: Cruise 1969, Kershaw 1976, Reznicek 1975-
76 et carte

REPARTITION: sOnt (Boivin 1967)

CARTE: Svenson 1939

CONDITIONS: Rare au Canada. Peut-être éliminée dans
le Wisconsin (Read 1976).

27

Eleocharis rostellata Torr.

Sources: FON 1969, Krotkov 1940, Reznicek 1975-76
et carte

REPARTITION: CB, sOnt, NE (Boivin 1967)

CARTE: Svenson 1934

CONDITIONS: En voie de disparition dans le Wisconsin
(Read 1976). Menacée dans la Pennsylvanie (Wherry
1975).

Elodea nuttallii (Planch.)St.John
SOURCES: Kershaw 1976, Stewart & James 1969 et carte
REPARTITION: nOnt-NB (Boivin 1967, CAN)
CARTE: Soper 1960 Ont, St. John 1965
CONDITIONS: Rare dans l'Ohio (Stuckey & Roberts 1976).

Elymus diversiglumis Scribn.& Ball
(E. interruptus auct.)
SOURCES: Kershaw 1976
REPARTITION: seSask-noOnt (Boivin 1967, Bowden 1964)
CARTE: Hitchcock & Chase 1950 E-U

Elymus glaucus Buckl.
SOURCES: Cartes
REPARTITION: Aka-Y, CB-Sask, Man, nOnt (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U, Hultén 1968

Elymus interruptus = E. diversiglumis

Elymus mollis Trin.
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-nOnt-Lab
ONTARIO: nOnt, disjoint Lac Supérieur
CARTE: Bowden 1957, Dore & McNeill 1976 Ont, Guire &
Voss 1963 Grands Lacs, Hultén 1964, Hultén 1968

Elymus riparius Wieg.
SourRCEs: Beschel et al. 1970 et carte
REPARTITION: Ont-sQ (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

Elymus villosus Muhl.
Sources: Beschel et al. 1970, Dore 1959, FON 1969,
Krotkov 1940, Stewart & James 1969 et carte
REPARTITION: S&eOnt-soQ (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U
CONDITIONS: Rare au Canada.

Epilobium leptocarpum Haussk. var. macounii Trel.
Sources: FON 1969, Kershaw 1976, Kershaw & Morton
1976, Krotkov 1940
REPARTITION: CB-Man, scOnt, Q-TN, localisé (Fernald
1950)
ONTARIO: Pén. Bruce

Epilobium paniculatum Nutt. var. subulatum
(Haussk.)Fern.
Sources: Fernald 1950, FON 1969
REPARTITION: CB-Sask, scOnt
ONTARIO: Lac Huron

28

Eragrostis hypnoides (Lam.)BSP.
Sources: Beschel et al. 1970, Cruise 1969, Dore 1959,
Stewart & James 1969 et carte
REPARTITION: seSask-sOnt-soQ (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont

Erigenia bulbosa (Michx.)Nutt.
Sources: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Soper 1962 Ont

CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976).

Erythronium albidum Nutt.
Sources: CAN, Kershaw 1976
REPARTITION: sOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Euonymus atropurpureus Jacq.

Sources: Cruise 1969, IBP-CT 1974, Kershaw 1976,
Soper 1962, Stewart & James 1969 et cartes

REPARTITION: soOnt (Boivin 1967)

CARTE: Fox & Soper 1953 Ont, Soper & Heimburger 1961
Ont, Soper & Heimburger 1976 Ont, Zander 1976 Lac
Erie

CONDITIONS: Rare au Canada.

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976, Zander 1976).

Eupatorium altissimum L.
Sources: CAN, Kershaw 1976
REPARTITION: soOnt
ONTARIO: Cté d’Essex et cté de Wentworth
CONDITIONS: Rare au Canada.

Eupatorium coelestinum L.

Sources: CAN, Kershaw 1976, Pratt 1974, Reznicek
1975-76

REPARTITION: soOnt
ONTARIO: Pointe Pelée
CONDITIONS: Rare au Canada.

Eupatorium purpureum L.
Sources: FON 1969, IBP-CT 1974 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Grant 1953, Soper 1960 Ont
CONDITIONS: Rare au Canada.

Euphorbia commutata Engelm.
SOURCES: Beschel et al. 1970, Kershaw 1976
REPARTITION: sOnt (Boivin 1967)

CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976).

Euphorbia corollata L.
SOURCES: Cruise 1969
REPARTITION: sOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Euphorbia obtusata Pursh

Sources: Campbell & Reznicek 1976, Kershaw 1976

REPARTITION: soOnt

ONTARIO: Ile Pelée

CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976). Menacée dans la
Pennsylvanie (Wherry 1975). Rare dans l'Indiana
(Barnes 1975).

Euphrasia frigida = E. vinacea

Euphrasia vinacea Sell & Yeo

(E. frigida auct.)

SOURCES: Kershaw 1976, Kershaw & Morton 1976, Sell &
Yeo 1970 et carte

REPARTITION: Man, neOnt

ONTARIO: Baie de James

CARTE: Given & Soper 1976 Ont

CONDITIONS: Rare au Canada.

Festuca baffinensis Polunin
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-Alta, nOnt
ONTARIO: Baie d'Hudson
CARTE: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964

Festuca brachyphylla Schult.
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-Alta, Man-nOnt-Q, TN-Lab
ONTARIO: nOnt, disjoint Lac Supérieur
CARTE: Dore & McNeill 1976 Ont, Given & Soper 1976
Ont, Hultén 1968, Porsild 1964

Festuca occidentalis Hook.

SOURCES: Dore 1975, Kershaw 1976 et cartes

REPARTITION: CB-Alta, Ont (Boivin 1967)

ONTARIO: Grands Lacs

CARTE: Dore & McNeill 1976 Ont, Given & Soper 1976
Ont, Hitchcock & Chase 1950 E-U

CONDITIONS: En voie de disparition dans le Wisconsin
(Read 1976).

Festuca rubra L. var. altaica Drobov
(F. rubra var. arenaria auct.)
SOURCES: Cartes
REPARTITION: TNO, Sask-neOnt-TN (Fernald 1950)
ONTARIO: Baie de James
CARTE: Dore & McNeill 1976 Ont, Porsild 1964

Festuca rubra var. arenaria = F. rubra var. altaica

Festuca rubra L. var. juncea (Hack.)Richter
SOURCES: Carte
REPARTITION: Ont-TN (Fernald 1950)
ONTARIO: Grands Lacs
CARTE: Dore & McNeill 1976 Ont

Festuca rubra L. var. rubra
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-neOnt-NE, Lab (Boivin 1967,
Fernald 1950)
ONTARIO: Baie de James
CARTE: Dore & McNeill 1976 Ont, Porsild 1966

Festuca scabrella Torr.

SOURCES: Cartes

REPARTITION: CB-Man, ncOnt-Q, TN

ONTARIO: Thunder Bay

CARTE: Dore & McNeill 1976 Ont, Given & Soper 1976
Ont, Hultén 1968, Johnston 1958

CONDITIONS: Menacée d'extinction dans le Michigan
(Wagner 1976).

Fimbristylis autumnalis (L.)R.& S.
Sources: Catling et al. 1977, Cruise 1969, Kershaw
1976, Reznicek 1975-76, et carte
REPARTITION: SOnt-soQ (Boivin 1967)
CARTE: Kral 1971 E-U, Soper 1962 Ont
CONDITIONS: Rare au Canada.

Fimbristylis drummondii = F. spadicea

Fimbristylis spadicea (L.)Vahl
(F. drummondii Boechl.)
Sources: CAN et carte
REPARTITION: soOnt
ONTARIO: Rivière Ste-Clair
CARTE: Soper 1962 Ont
CONDITIONS: Rare au Canada.

Floerkea proserpinacoides Willd.
SOURCES: Kershaw 1976 et carte
REPARTITION: Ont-soQ, NE (Boivin 1967)
CARTE: Becker 1960
CONDITIONS: Rare au Canada. Rare dans le Minnesota
(Morley 1972).

Frasera caroliniensis = Swertia caroliniensis

Fraxinus quadrangulata Michx.

Sources: IBP-CT 1974, Kershaw 1976, Lafontaine 1974,
Stewart & James 1969 et cartes

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Pointe Pelée et ile Pelée

CARTE: Fox & Soper 1953 Ont, Hosie 1969 Can, Little
1971

CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976).

Galium kamtschaticum Steller
SOURCES: Cartes
REPARTITION: Aka, CB, ncOnt, NB-TN, localisé
ONTARIO: Lac Supérieur
CARTE: Given & Soper 1976 Ont, Hultén 1968

Galium pilosum Ait.
SouRCES: Beschel et al. 1970, Cruise 1969, Kershaw
1976
REPARTITION: sOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Gaura biennis L.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Raven & Gregory 1972
CONDITIONS: Rare au Canada. Rare dans le Minnesota
(Morley 1972).

29

Gentiana alba Muhl.

(G. flavida Gray)

SOURCES: Beschel et al. 1970, Kershaw 1976 et carte

REPARTITION: seOnt (Boivin 1967)

CARTE: Pringle 1967

CONDITIONS: Rare au Canada. Menacée d’extinction
dans le Wisconsin (Read 1976). Rare dans le Michi-
gan et l'Indiana (Wagner 1976, Barnes 1975).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Gentiana detonsa Rottb. var. nesophila (Th. Holm)Boivin
(G. nesophila Th. Holm, Gentianella detonsa
(Rottb.)G. Don ssp. nesophila (Th. Holm)J.M. Gillett)

SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
carte

REPARTITION: TNO, nOnt-Q, TN-Lab (Boivin 1967)

ONTARIO: Baies d'Hudson et de James

CARTE: Gillett 1963, Raymond 1950b

Gentiana detonsa Rottb. var. raupii (Pors.)Boivin

(G. raupii Pors., Gentianella detonsa (Rottb.)G. Don
ssp. raupii (Pors.)J.M. Gillett)

SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
carte

REPARTITION: Aka-TNO, Alta, nOnt (Boivin 1967)

ONTARIO: Baies d’Hudson et de James

CARTE: Cody 1971, Gillett 1963, Porsild 1966

Gentiana flavida = G. alba
Gentiana nesophila = G. detonsa var. nesophila
Gentiana puberula = G. puberulenta

Gentiana puberulenta Pringle

(G. puberula Michx.)

Sources: Catling 1974, Kershaw 1976 et carte

REPARTITION: Man-sOnt

CARTE: Pringle 1967

CONDITIONS: Rare au Canada. Menacée d’extinction
dans le Michigan (Wagner 1976). Extrémement rare
dans l'ouest de |’Etat de New York (Clinton Herba-
rium 1974).

PROTECTION: Protégée par la loi dans le Minnesota et
l'Etat de New York (McGaugh & Genoways 1976).

Gentiana quinquefolia L.
(Gentianella quinquefolia (L.)Small)
SOURCES: Kershaw 1976 et carte
REPARTITION: sOnt (Boivin 1967)
CARTE: Gillett 1963, Zander 1976 Lac Erie
CONDITIONS: Rare et peut-être éliminée du Canada.

Gentiana raupii = G. detonsa Var. raupii

Gentianella detonsa ssp. nesophila = Gentiana detonsa
var. nesophila

Gentianella detonsa ssp. raupii = Gentiana detonsa var.
raupil

Gentianella quinquefolia = Gentiana quinquefolia

30

Gerardia gattingeri = Agalinis gattingeri
Gerardia skinneriana = Agalinis skinneriana

Gerardia tenuifolia var. parviflora = Agalinis tenuifolia
var. parviflora

Geum laciniatum Murray
Sources: Beschel et al. 1970, Cruise 1969, Stewart &
James 1969
REPARTITION: SOnt-NE (Boivin 1967)
CONDITIONS: Rare dans le Minnesota (Morley 1972).

Geum triflorum Pursh
Sources: Carte
REPARTITION: CB-sOnt (Boivin 1967)
CARTE: Catling et al. 1975 Ont
CONDITIONS: Menacée d'extinction dans le Michigan
(Wagner 1976).

Geum vernum (Raf.)T.& G.
SOURCES: Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Cté d’Essex
CONDITIONS: Rare au Canada. Rare dans le Michigan
(Wagner 1976).

Gillenia trifoliata (L.)Moench
Sources: Beschel et al. 1970, Kershaw 1976 et carte
REPARTITION: sOnt (Boivin 1967)
CARTE: Soper 1962 Ont
CONDITIONS: Rare au Canada.

Glaux maritima L. var. obtusifolia Fern.
SOURCES: Cartes
REPARTITION: eTNO, neOnt-NE, TN (Boivin 1967)
ONTARIO: Baie de James
CARTE: Hultén 1968, Hultén 1971

Gleditsia triacanthos L.
SOURCES: Kershaw 1976 et cartes
REPARTITION: soOnt (Boivin 1967)
CARTE: Fox & Soper 1953 Ont, Hosie 1969 Can, Little
1971, Soper 1956 Ont
CONDITIONS: Rare au Canada. Rare dans le Minnesota
(Morley 1972).

Glyceria melicaria (Michx.)Hubbard
SOURCES: Dore 1959 et carte
REPARTITION: eOnt-NB, NE (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U
CONDITIONS: Rare au Canada.

Glycyrrhiza lepidota Pursh
SOURCES: IBP-CT 1974
REPARTITION: CB-Ont (Boivin 1967)
CARTE: Welsh 1960 cE-U
CONDITIONS: Menacée d'extinction dans le Wisconsin
(Read 1976).

Gnaphalium purpureum L. var. purpureum
Sources: Reznicek 1975-76
REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Goodyera oblongifolia Raf.

Sources: Catling 1974, FON 1969 et cartes

REPARTITION: CB-Ont, Q, NE

CARTE: Case 1964 Grands Lacs, Given & Soper 1976 Ont,
Luer 1975

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans le Minnesota,
le Wisconsin (McGaugh & Genoways 1976) et le Ver-
mont (Vermont 1957, 1974).

Gymnocarpium robertianum (Hoffm.)Newm.
(Dryopteris robertiana (Hoffm.)Christens.)
SourceS: Britton 1976, FON 1969, Krotkov 1940 et
carte

REPARTITION: Aka-TNO, CB-Ont, Q, TN

ONTARIO: Grands Lacs

CARTE: Hultén 1964, Soper 1963 Grand Lacs

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Gymnocladus dioica (L.)Koch
SOURCES: Kershaw 1976 et cartes
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Ile Pelée et cté de Lambton

CARTE: Fox & Soper 1953 Ont, Hosie 1969 Can, Soper
1956 Ont

CONDITIONS: Rare au Canada. Menacée dans le Wiscon-
sin et le Michigan (Read 1976, Wagner 1976).

Habenaria blephariglottis = Platanthera blephariglottis
Habenaria ciliaris = Platanthera ciliaris

Habenaria flava var. herbiola = Platanthera flava var.
herbiola

Habenaria leucophaea = Platanthera leucophaea
Habenaria unalascensis = Piperia unalascensis

Hedysarum mackenzii Richards.
Sources: Moir 1958 et cartes
REPARTITION: Aka-TNO, CB-Man, nOnt-Q, TN (Boivin
1967)
ONTARIO: Baies d'Hudson et de James
CARTE: Hultén 1968, Meusel et al. 1965, Porsild 1964

Helianthemum bicknellii Fern.
SOURCES: Cruise 1969, Kershaw 1976 et carte
REPARTITION: seMan-sOnt (Boivin 1967)
CARTE: Daoud & Wilbur 1965
CONDITIONS: Rare au Canada.

Hemicarpha micrantha (Vahl)Pax

(Scirpus micranthus Vahl)

Sources: CAN, Kershaw 1976, Reznicek 1975-76 et
carte

REPARTITION: soOnt-soQ (Boivin 1967)

ONTARIO: Amherstburg

CARTE: Friedland 1941

CONDITIONS: Rare au Canada. Menacée dans le Michigan
et la Pennsylvanie (Wagner 1976, Wherry 1975).

Heuchera americana L.
SOURCES: Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Ile Pelée et Amherstburg
CONDITIONS: Rare au Canada.

Hibiscus moscheutos var. purpurascens = H. palustris

Hibiscus palustris L.

(H. moscheutos L. var. purpurascens Sweet)

SOURCES: IBP-CT 1974, Kershaw 1976, Stewart & James
1969 et cartes

REPARTITION: SOnt (Boivin 1967)

CARTE: Fernald 1942, Soper 1962 Ont

CONDITIONS: Rare au Canada. Eliminée dans le Wiscon-
sin (Read 1976). Menacée d’extinction dans le Michi-
gan (Wagner 1976).

Hieracium gronovii L.
SOURCES: Kershaw 1976
REPARTITION: sOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Hieracium longipilum Torr.
SOURCES: Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada. Rare dans l'Indiana (Bar-
nes 1975).

Hieracium paniculatum L.
SOURCES: Beschel et al. 1970, IBP-CT 1974
REPARTITION: Ont-Q, NE (Boivin 1967)
CONDITIONS: Rare au Canada.

Hieracium venosum L. var. nudicaule (Michx.)Farw.
SOURCES: Kershaw 1976
REPARTITION: SOnt (Boivin 1967)
CONDITIONS: Rare au Canada. Rare dans l'Indiana (Bar-
nes 1975).

Hierochloe pauciflora R.Br.
SOURCES: Cartes

REPARTITION: Aka-TNO, Man-neOnt-Q, Lab (Boivin 1967)

ONTARIO: Cap Henriette-Marie
CARTE: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964

Houstonia caerulea L.
SOURCES: CAN, Reznicek 1975-76
REPARTITION: Ont-NE (Boivin 1967)
ONTARIO: Petawawa
CONDITIONS: En voie de disparition dans le Wisconsin
(Read 1976).

31

Hybanthus concolor (T.F.Forster)Spreng.
SOURCES: Cruise 1969, Kershaw 1976 et carte
REPARTITION: sOnt (Boivin 1967)
CARTE: Soper 1962 Ont
CONDITIONS: Rare au Canada. Peut-être éliminée dans
le Wisconsin (Read 1976). Rare dans le Michigan
(Wagner 1976).

Hydrastis canadensis L.

SOURCES: Cruise 1969, Kershaw 1976 et carte

REPARTITION: soOnt (Boivin 1967)

CARTE: Lloyd & Lloyd 1908, Soper 1960 Ont, Zander
1976 Lac Erie

CONDITIONS: Rare au Canada. En voie de disparition
dans l'Illinois (Paulson & Schwegman 1976). Menacée
dans le Wisconsin et le Michigan (Read 1976, Wagner
1976). Rare dans le Minnesota (Morley 1972).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976, Zander 1976).

Hydrophyllum appendiculatum Michx.
SOURCES: Kershaw 1976 et cartes
REPARTITION: soOnt (Boivin 1967)
CARTE: Constance 1942, Soper 1960 Ont
CONDITIONS: Rare au Canada.

Hydrophyllum canadense L.
SOURCES: Cruise 1969, Kershaw 1976, Stewart & James
1969 et carte
REPARTITION: SOnt-soQ (Boivin 1967)
CARTE: Constance 1942
CONDITIONS: Rare au Canada.

Hymenoxys acaulis (Pursh)Parker var. glabra

(Gray)Parker
(Actinea acaulis (Pursh)Spreng. var. glabra
(Gray)Parker, A. herbacea (Greene)Robins. )

Sources: Catling et al. 1975, FON 1969, Kershaw 1976,
Kershaw & Morton 1976

REPARTITION: scOnt (Boivin 1967)

ONTARIO: Ile Manitoulin

CONDITIONS: Rare au Canada.

Hypericum gentianoides (L.)BSP.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt-soQ (Boivin 1967)
CARTE: Gillett 1976
CONDITIONS: Rare au Canada.

Hypericum prolificum L.
(H. spathulatum (Spach)Steud. )
SOURCES: Kershaw 1976 et cartes
REPARTITION: sOnt (Boivin 1967)
CARTE: Gillett 1976, Soper & Heimburger 1961 Ont, So-
per & Heimburger 1976 Ont, Utech & Iltis 1970
CONDITIONS: Rare au Canada.

Hypericum spathulatum = H. prolificum

32

Hypoxis hirsuta (L.)Cov.
Sources: Beschel et al. 1970, Cruise 1969, IBP-CT 1974
et carte
REPARTITION: Sask-soOnt (Boivin 1967)
CARTE: Soper 1960 Ont

Ipomoea pandurata (L.)G.F.W.Meyer
SOURCES: Kershaw 1976 et carte
REPARTITION: swOnt (Boivin 1967)
ONTARIO: Pointe Pelée, Ile Pelée et Niagara Falls
CARTE: Soper 1962 Ont
CONDITIONS: Rare au Canada.

Iris brevicaulis Raf.
Sources: CAN, Kershaw 1976, Shields 1954
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Pointe Pelée
CONDITIONS: Rare au Canada.

Iris lacustris Nutt.

Sources: Catling 1974, IBP-CT 1974, Kershaw 1976,
Kershaw & Morton 1976 et cartes

REPARTITION: scOnt (Boivin 1967)

ONTARIO: Pen. Bruce et ile Manitoulin

CARTE: Given & Soper 1976 Ont, Guire & Voss 1963,
Soper 1977 Ont

CONDITIONS: Rare au Canada. Menacée d’extinction aux
Etats-Unis (Smithsonian Institution 1975). En voie de
disparition dans le Wisconsin (Read 1976). Menacée
d'extinction dans le Michigan (Wagner 1976).

Isoetes lacustris var. macrospora = |. macrospora

Isoetes macrospora Dur.

(I. lacustris L. var. macrospora (Dur.)de Hultén)
SOURCES: Brayshaw 1964, Britton 1976 et cartes
REPARTITION: Ont-NE, TN-Lab (Boivin 1967)
CARTE: Hultén 1958, Soper & Rao 1958 eCan
CONDITIONS: Rare au Canada.

Isopyrum biternatum (Raf.)T.& G.
SOURCES: Cruise 1969, Kershaw 1976, Stewart & James
1969 et carte
REPARTITION: sOnt (Boivin 1967)
CARTE: Griggs 1913, Soper 1962 Ont
CONDITIONS: Rare au Canada.

Isotria verticillata (Willd.)Raf.
Sources: Catling & Whiting 1976, Cruise 1969, IBP-CT
1974, Kershaw 1976, Lafontaine 1974 et cartes
REPARTITION: soOnt
ONTARIO: Cté de Norfolk et Komoka(éliminé)

CARTE: Case 1964 Grands Lacs, Luer 1975, Soper 1962
Ont

CONDITIONS: Rare au Canada; en voie de disparition en
Ontario (Catling & Whiting 1976) En voie de dispari-
tion dans le New Hampshire (Hodgdon 1973). Extré-
mement rare dans l'ouest de l'Etat de New York
(Clinton Herbarium 1974). Rare dans le Michigan et
l'Indiana (Wagner 1976, Barnes 1975).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans l'Etat de New
York (McGaugh & Genoways 1976 et le Vermont (Ver-
mont 1957, 1974).

Jeffersonia diphylla (L.)Pers.

SOURCES: Beschel et al. 1970, Cruise 1969, IBP-CT
1974, Kershaw 1976, Stewart & James 1969 et cartes

REPARTITION: sOnt (Boivin 1967)

CARTE: Soper 1960 Ont, Soper 1962 Ont

CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976). Extrémement rare
dans l'ouest de l'Etat de New York (Clinton Herba-
rium 1974). Rare dans le Minnesota et le Michigan
(Morley 1972, Wagner 1976).

Juglans nigra L.

SOURCES: Beschel et al. 1970, Cruise 1969, FON 1969,
IBP-CT 1974, Kershaw 1976, Stewart & James 1969
et cartes

REPARTITION: SOnt (Boivin 1967)

CARTE: Fox & Soper 1953 Ont, Hosie 1969 Can, Little
1971

CONDITIONS: Rare au Canada.

Juncus acuminatus Michx.
SouRCES: Beschel et al. 1970, DAO
REPARTITION: CB, sOnt-Q, NE (Boivin 1967)
CARTE: Fassett 1931 neN-A

Juncus biflorus Ell.
Sources: DAO, Reznicek 1975-76
REPARTITION: soOnt
ONTARIO: Cté d’Essex

CONDITIONS: Rare au Canada. Rare dans le Michigan
(Wagner 1976).

Juncus brachycarpus Engelm.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Fernald 1937
CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Michigan (Wagner 1976). Rare dans le Minne-
sota (Morley 1972).

Juncus ensifolius Wikstr.
Sources: Kershaw 1976, Kershaw & Morton 1976, Rez-
nicek 1975-76 et cartes
REPARTITION: Aka, CB-Sask, neOnt-Q (Boivin 1967)
ONTARIO: Baie de James
CARTE: Dutilly & Lepage 1963 eCan, Hultén 1968

Juncus greenii var. vaseyi = J. vaseyi

Juncus longistylis Torr.
Sources: DAO, Kershaw 1976, Kershaw & Morton 1976,
Reznicek 1975-76 et carte
REPARTITION: CB-Ont-Q, TN (Boivin 1967, Fernald
1950)
ONTARIO: Rivière Albany et rivière Detroit
CARTE: Dutilly et al. 1954

Juncus marginatus Rostk.
Sources: Kershaw 1976, Reznicek 1975-76
REPARTITION: Ont-NE (Boivin 1967)
CONDITIONS: Rare dans le Minnesota (Morley 1972).

Juncus militaris Bigel.
Sources: Reznicek 1975-76 et carte
REPARTITION: COnt-NE, TN (Boivin 1967)
CARTE: Meusel et al. 1965
CONDITIONS: Menacée dans le Michigan et la Pennsylva-
nie (Wagner 1976, Wherry 1975).

Juncus secundus Beauv.
SOURCES: Kershaw 1976
REPARTITION: eOnt (Boivin 1967)
CONDITIONS: Rare au Canada. Rare dans l'Indiana (Bar-
nes 1975).

Juncus subtilis E.Mey.
Sources: Reznicek 1975-76 et carte
REPARTITION: nOnt-NB, TN (Boivin 1967)
CARTE: Lepage 1966

Juncus vaseyi Engelm.

(J. greenii Oakes & Tuckerm. var. vaseyi
(Engelm.)Boivin)

Sources: Reznicek 1975-76

REPARTITION: TNO, CB-ncOnt-NB, NE-Lab (Boivin 1967)

ONTARIO: Lac Supérieur

CONDITIONS: Menacée d’extinction dans le Michigan
(Wagner 1976).

Justicia americana (L.)Vahl
Sources: Beschel et al. 1970, Kershaw 1976 et carte
REPARTITION: SOnt-soQ (Boivin 1967)
CARTE: Soper 1960 Ont
CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Michigan (Wagr er 1976).

Kobresia simpliciuscula (Wahl.)Mack.
SOURCES: CAN, Reznicek 1975-76 et cartes
REPARTITION: Aka-TNO, CB-Alta, Man-nOnt-Q, TN-Lab
(Boivin 1967)
ONTARIO: Baies d'Hudson et de James
CARTE: Hultén 1958, Hultén 1968, Porsild 1964

33

Koeleria cristata = K. pyramidata
Koeleria gracilis = K. pyramidata

Koeleria macrantha

K.pyramidata

Koeleria pyramidata (Lam.)Beauv.
(K. cristata auct., K. gracilis auct., K. macrantha
auct.)
SOURCES: Cruise 1969 et cartes
REPARTITION: Aka-TNO, CB-Q (Boivin 1967)
CarTE: Dore & McNeill 1976 Ont, Hultén 1968

Koenigia islandica L.
SOURCES: Reznicek 1975-76
REPARTITION: Aka-TNO, nOnt-Q, Lab (Boivin 1967)
ONTARIO: Baie d'Hudson
CARTE: Hultén 1968, Porsild 1964

Krigia biflora (Walter)Blake
SOURCES: Chinnappa 1976, Kershaw 1976
REPARTITION: Man-soOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Krigia virginica (L.)Willd.
SOURCES: Chinnappa 1976, Kershaw 1976
REPARTITION: sOnt (Fernald 1950)
CONDITIONS: Rare au Canada; peut-être allogène (Glea-
son 1952).

Lactuca floridana (L.)Gaertn.
SOURCES: Kershaw 1976
REPARTITION: seMan-soOnt (Boivin 1967)
CONDITIONS: Rare au Canada. Rare dans le Minnesota
(Morley 1972).

Lechea leggettii Britt.& Hollick var. moniliformis

(Bickn.)Hodgdon

Sources: Cruise 1969 et carte

REPARTITION: soOnt (Fernald 1950)

ONTARIO: Cté d'Essex

CARTE: Hodgdon 1938

CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Michigan (Wagner 1976).

Lechea minor L.
SOURCES: Cruise 1969 et carte
REPARTITION: soOnt (Fernald 1950)
ONTARIO: Cté d’Essex
CARTE: Hodgdon 1938
CONDITIONS: Rare au Canada. Rare dans le Michigan
(Wagner 1976).

Lechea stricta Leggett
Sources: Kershaw 1976 et carte
REPARTITION: sOnt
ONTARIO: Belleville et cté d’Essex
CARTE: Hodgdon 1938
CONDITIONS: Rare au Canada. Rare dans l'Indiana (Bar-
nes 1975).

34

Ledum palustre L. var. decumbens Ait.
Sources: Moir 1958 et cartes
REPARTITION: Aka-TNO, CB-nOnt-Q, Lab (Boivin 1967)
ONTARIO: Baie d'Hudson
CARTE: Given & Soper 1976 Ont, Hultén 1968, Hultén
1971, Soper & Heimburger 1976 Ont

Lespedeza intermedia (L.)Pers.
SOURCES: Kershaw 1976 et cartes
REPARTITION: sOnt
CARTE: Clewell 1966, Isely 1955, Soper 1962 Ont
CONDITIONS: Rare au Canada.

Lespedeza violacea (L.)Pers.
Sources: Beschel et al. 1970, Kershaw 1976 et cartes
REPARTITION: soOnt (Fernald 1950)
CARTE: Clewell 1966, Isely 1955, Soper 1962 Ont
CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Wisconsin (Read 1976).

Lespedeza virginica (L.)Britt.

SOURCES: Kershaw 1976 et cartes

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Cté d'Essex

CARTE: Clewell 1966, Isely 1955, Soper 1962 Ont

CONDITIONS: Rare au Canada.; peut-être éliminée de
l'Ontario (Soper 1962). En voie de disparition dans le
Wisconsin et le New Hampshire (Read 1976, Hodgdon
1973).

Liatris aspera Michx. var. intermedia (Lunell)Gaiser
SOURCES: CAN, Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)

ONTARIO: Grand Bend et Pointe Pelée
CARTE: Gaiser 1951
CONDITIONS: Rare au Canada.

Liatris spicata (L.)Willd.
SOURCES: CAN, Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Soper 1960 Ont
CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Wisconsin (Read 1976).

Limosella aquatica L.

Sources: Reznicek 1975-76 et carte

REPARTITION: Aka-TNO, CB-nOnt-Q, Lab, localisé (Boi-
vin 1967)

ONTARIO: Baies d'Hudson et de James

CARTE: Hultén 1968, Pennell 1935

CONDITIONS: En voie de disparition dans le New Hamp-
shire (Hodgdon 1973).

Linum lewisii Pursh ssp. lepagei (Boivin)Mosquin
(L. lepagei Boivin, L. perenne L. ssp. lepagei
(Boivin)Lepage)

SOURCES: Moir 1958 et cartes

REPARTITION: eTNO, nMan-nOnt

ONTARIO: Baies d'Hudson et de James

CARTE: Given & Soper 1976 Ont, Mosquin 1971

Linum lepagei = L. lewisii ssp. lepagei

Linum perenne ssp. lepagei = L. lewisii ssp. lepagei

Linum medium (Planch.)Britt. Var. texanum
(Planch.)Fern.
SOURCES: Cruise 1969 et carte
REPARTITION: soOnt (Fernald 1950)
CARTE: Rogers 1963
CONDITIONS: Rare au Canada.

Linum striatum Walt.
Sources: Catling et al. 1977, Reznicek 1975-76
REPARTITION: sOnt (Fernald 1950)
CARTE: Rogers 1963
CONDITIONS: Rare au Canada.

Linum sulcatum Riddell
Sources: Beschel et al. 1970 et carte
REPARTITION: SMan-sOnt, localisé (Boivin 1967)
CARTE: Rogers 1963, Rogers 1969
CONDITIONS: Rare dans l'Indiana (Barnes 1975).

Linum virginianum L.
SOURCES: Kershaw 1976 et cartes
REPARTITION: sOnt (Boivin 1967)
CARTE: Rogers 1963, Rogers 1969
CONDITIONS: Rare au Canada.

Liparis lilifolia (L.)L.C.Rich

Sources: Andrews 1961, Catling & Whiting 1976, Ker-
shaw 1976, Lafontaine 1974 et cartes

REPARTITION: soOnt

ONTARIO: Komoka et Windsor

CARTE: Case 1964 Grands Lacs, Luer 1975, Soper 1960
Ont

CONDITIONS: Rare au Canada; en voie de disparition en
Ontario (Catling & Whiting 1976) Extrémement rare
dans l'ouest de |’Etat de New York (Clinton Herba-
rium 1974).

PROTECTION: Le commerce international de cette plante
fait l'objet d’un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans le Minnesota,
le Wisconsin, l'Etat de New York (McGaugh & Geno-
ways 1976)

Lippia lanceolata var. recognita = Phyla lanceolata var.
recognita

Liriodendron tulipifera L.
Sources: Cruise 1969, IBP-CT 1974, Kershaw 1976,
Lafontaine 1974, Stewart & James 1969 et cartes
REPARTITION: soOnt (Boivin 1967)
CARTE: Fox & Soper 1952 Ont, Hosie 1969 Can, Little
1971, Maycock 1963
CONDITIONS: Rare au Canada.

Listera australis Lindl.

SOURCES: Greenwood 1962, Kershaw 1976, Lafontaine &
White 1974, Whiting 1971, Whiting 1974 et cartes

REPARTITION: SOnt, Q, NE

CARTE: Luer 1975, Soper 1960 Ont

CONDITIONS: Rare au Canada. Menacée dans la Pennsyl-
vanie (Wherry 1975).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans l'Etat de New
York (McGaugh & Genoways 1976 et le Vermont (Ver-
mont 1957, 1974).

Listera borealis Morong

SOURCES: Lafontaine 1974 et cartes

REPARTITION: Aka-TNO, CB-nOnt-TN

CARTE: Given & Soper 1976 Ont, Luer 1975, Raup 1947,
Soper 1960 Ont

CONDITIONS: Rare au Canada.

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis

Lithospermum incisum Lehm.
SOURCES: Reznicek 1975-76
REPARTITION: CB-sOnt (Boivin 1967)
CONDITIONS: Rare dans l'Indiana (Barnes 1975).

Lithospermum latifolium Michx.
SOURCES: Reznicek 1975-76
REPARTITION: Ont-sQ (Boivin 1967)
CONDITIONS: Rare au Canada. Menacée d’extinction
dans le Wisconsin (Read 1976).

Littorella americana Fern.
Sources: CAN et carte
REPARTITION: 0Ont-TN
CARTE: Bassett 1973
CONDITIONS: Menacée d’extinction dans le Wisconsin
(Read 1976). Rare dans le Minnesota et le Michigan
(Morley 1972, Wagner 1976).

Ludwigia alternifolia L.
SOURCES: Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Cté d'Essex
CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Michigan (Wagner 1976).

Ludwigia polycarpa Short & Peter
SOURCES: Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
CARTE: Fernald 1918
CONDITIONS: Rare au Canada. Menacée dans la Pennsyl-
vanie (Wherry 1975).

Lupinus perennis L.
SOURCES: Cruise 1969, Kershaw 1976 et cartes
REPARTITION: sOnt (Boivin 1967)
CARTE: Dunn 1965, Phillips 1955, Soper 1960 Ont
CONDITIONS: Rare au Canada.

35

Lythrum alatum Pursh
SOURCES: CAN, Kershaw 1976
REPARTITION: CB, soOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Magnolia acuminata L.

SouRCES: Cruise 1969, IBP-CT 1974, Kershaw 1976,
Lafontaine 1974, Stewart & James 1969 et cartes

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Cté de Norfolk et région de Niagara

CARTE: Fox & Soper 1952 Ont, Hardin 1954, Hosie 1969
Can, Little 1971

CONDITIONS: Rare au Canada. Rare dans l'Indiana (Bar-
nes 1975).

Malaxis paludosa (L.)Sw.

Sources: Baldwin 1961, Catling & Whiting 1976, Ker-
shaw 1976, Kershaw & Morton 1976, Lafontaine 1974
et cartes

REPARTITION: Aka-TNO, CB-noOnt, localisé

CARTE: Case 1964 Grands Lacs, Given & Soper 1976 Ont,
Luer 1975, Soper 1960 Ont

CONDITIONS: Rare au Canada.

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans le Minnesota
(McGaugh & Genoways 1976).

Melandrium apetalum (L.)Fenzl ssp. arcticum
(E.Fries)Hult.
SOURCES: Moir 1958 et cartes
REPARTITION: Aka-TNO, CB-Alta, Man-nOnt-Q
ONTARIO: Baies d'Hudson et de James
CARTE: Hultén 1968, Porsild 1964

Melica smithii (Porter)Vasey

SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
cartes

REPARTITION: CB-Alta, Ont (Boivin 1967)

ONTARIO: Grands Lacs

CARTE: Boyle 1945, Dore & McNeill 1976 Ont, Fernald
1935, Given & Soper 1976 Ont

CONDITIONS: En voie de disparition dans le Wisconsin
(Read 1976).

Mertensia maritima (L.)S.F.Gray
SOURCES: Moir 1958 et cartes
REPARTITION: Aka-TNO, CB, Man-nOnt-Q, NE-Lab (Boi-
vin 1967)
ONTARIO: Baies d’Hudson et de James
CARTE: Hultén 1958, Hultén 1968, Porsild 1964

Mertensia virginica (L.)Pers.

Sources: Catling 1974, Cruise 1969, Kershaw 1976,
Stewart & James 1969 et carte

REPARTITION: SOnt-soQ (Boivin 1967)

CARTE: Soper 1960 Ont

CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Michigan (Wagner 1976).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976, Zander 1976).

36

Mikania scandens (L.)Willd.

SOURCES: Kershaw 1976 et carte

REPARTITION: soOnt

ONTARIO: Malden

CARTE: Soper 1962 Ont

CONDITIONS: Rare au Canada; peut-être éliminée de
l'Ontario (Soper 1962). Rare dans l'Indiana (Barnes
1975).

Mimulus alatus Ait.
SOURCES: Kershaw 1976, Pratt 1974 et cartes
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Parc Prov. Rondeau et région de Niagara
CARTE: Pennell 1935, Soper 1960 Ont
CONDITIONS: Rare au Canada. Menacée d’extinction
dans le Michigan (Wagner 1976).

Mimulus glabratus HBK. var. fremontii (Benth.)Grant
Sources: Kershaw 1976 et carte
REPARTITION: seSask-Ont-Q (Boivin 1967, Rousseau et
al. 1970)
ONTARIO: Dist. de Cochrane et Toronto (éliminé)
CARTE: Pennell 1935, Soper 1960 Ont.
CONDITIONS: Rare au Canada.

Mimulus moschatus Dougl.
SOURCES: Cartes
REPARTITION: CB, cOnt-TN (Boivin 1967)
CARTE: Given & Soper 1976 Ont, Soper 1960 Ont

Minuartia rubella = Arenaria rubella

Monarda didyma L.

SOURCES: Kershaw 1976 et cartes

REPARTITION: soOnt-soQ (Boivin 1967)

CARTE: McClintock & Epling 1942, Scora 1967, Zander
1976 Lac Erie

CONDITIONS: Rare au Canada.

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Montia fontana L.
SOURCES: Reznicek 1975-76 et cartes
REPARTITION: Aka-TNO, nOnt-Q, NE-Lab, localisé (Boi-
vin 1967)
ONTARIO: Baies d’Hudson et de James
CARTE: Hultén 1968, Meusel et al. 1965

Morus rubra L.

SourRCcES: Cruise 1969, Kershaw 1976, Stewart & James
1969 et cartes

REPARTITION: soOnt (Boivin 1967)

CARTE: Fox & Soper 1953 Ont, Hosie 1969 Can, Soper
1960 Ont

CONDITIONS: Rare au Canada. Rare dans le Minnesota et
le Michigan (Morley 1972, Wagner 1976).

Muhlenbergia racemosa (Michx.)BSP.
SOURCES: Carte
REPARTITION: CB-ncOnt (Boivin 1967)
ONTARIO: Lac Supérieur et Lac des bois
CARTE: Dore & McNeill 1976 Ont, Pohl 1969

Muhlenbergia schreberi J.F.Gmelin
SOURCES: Kershaw 1976 et carte
REPARTITION: sOnt (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Poh! 1969
CONDITIONS: Rare au Canada; peut-être allogène (Dore
& McNeill 1976). Rare dans le Michigan (Wagner
1976).

Muhlenbergia sylvatica Torr.
SOURCES: Beschel et al. 1970, Kershaw 1976 et carte
REPARTITION: soOnt-soQ (Fernald 1950)
ONTARIO: Cté de Welland
CARTE: Dore & McNeill 1976 Ont, Pohl 1969
CONDITIONS: Rare au Canada.

Muhlenbergia tenuiflora (Willd.)BSP.
SOURCES: Beschel et al. 1970, Kershaw 1976 et cartes
REPARTITION: SOnt-Q (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Pohl 1969
CONDITIONS: Rare au Canada.

Myosotis macrosperma Engelm.
SOURCES: Campbell & Reznicek 1976, Reznicek 1975-76
REPARTITION: soOnt
CARTE: Fernald 1941
CONDITIONS: Rare au Canada.

Myosotis verna Nutt.
SOURCES: Carte
REPARTITION: CB, sOnt (Boivin 1967)
CARTE: Catling et al. 1975 Ont
CONDITIONS: Rare au Canada. Rare dans le Minnesota
(Morley 1972).

Myosurus minimus L.
SOURCES: Beschel et al. 1970 et cartes
REPARTITION: CB-soOnt (Boivin 1967)
CARTE: Meusel et al. 1965, Soper 1960 Ont

Myrica pensylvanica Loisel.

Sources: IBP-CT 1974, Kershaw 1976 et cartes

REPARTITION: soOnt, Q-TN (Boivin 1967)

ONTARIO: Pointe Turkey

CARTE: Soper & Heimburger 1961 Ont, Soper & Heimbur-
ger 1976 Ont

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976, Zander 1976).

Myriophyllum farwellii Morong

SOURCES: Brunton 1974-75, Reznicek 1975-76

REPARTITION: CB, nOnt-NB, NE (Boivin 1967, Ceska &
Warrington 1976)

CARTE: Voss 1965 Grands lacs

CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976). Menacée dans le
Michigan et la Pennsylvanie (Wagner 1976, Wherry
1975).

Myriophyllum humile (Raf.)Morong
SOURCES: Reznicek 1975-76
REPARTITION: Ont-NE (Boivin 1967)

Najas gracillima (A.Br.)Magnus
SOURCES: Kershaw 1976 et carte
REPARTITION: eOnt, NE (Boivin 1967)
CARTE: Clausen 1936, Meusel et al. 1965
CONDITIONS: Rare au Canada. Eliminée dans l'Ohio
(Stuckey & Roberts 1976).

Najas guadalupensis (Spreng.)Magnus
Sources: Beschel et al. 1970, Kershaw 1976
REPARTITION: Ont-soQ (Boivin 1967)

CARTE: Clausen 1936

CONDITIONS: Rare au Canada. Rare dans |’Indiana (Bar-
nes 1975).

Nelumbo lutea (Willd.)Pers.
SOURCES: Catling 1974, Cruise 1969, IBP-CT 1974, Ker-
shaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Soper 1962 Ont
CONDITIONS: Rare au Canada. En voie de disparition
dans le Michigan (Wagner 1976).

PROTECTION: Protégée par la loi dans |’Etat de New York
(McGaugh & Genoways 1976, Zander 1976).

Nuphar advena = N. luteum ssp. macrophyllum

Nuphar luteum Sm. ssp. macrophyllum (Small)Beal
(N. advena Ait.)
Sources: Cruise 1969, Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Beal 1956
CONDITIONS: Rare au Canada.

Nyssa sylvatica Marsh.
Sources: Cruise 1969, Kershaw 1976, Soper 1962, Ste-
wart & James 1969 et cartes
REPARTITION: sOnt (Boivin 1967)

CARTE: Eyde 1963, Fox & Soper 1953 Ont, Hosie 1969
Can, Little 1971

CONDITIONS: Rare au Canada.

Oenothera nuttalli Sweet
SOURCES: CAN
REPARTITION: CB-ncOnt (Boivin 1967)
ONTARIO: Lac Supérieur

Oenothera pilosella Raf.
Sources: CAN, Kershaw 1976
REPARTITION: soOnt-soQ (Boivin 1967)
CONDITIONS: Rare au Canada.

Onosmodium molle Michx. var. hispidissimum
(Mack. )Cronq.
SOURCES: Beschel et al. 1970, Kershaw 1976, Stewart &
James 1969
REPARTITION: SMan-soOnt (Boivin 1967)

CONDITIONS: Menacée d’extinction dans le Wisconsin
(Read 1976). Rare dans |’Indiana (Barnes 1975).

37.

Oplopanax horridus (Sm.)Miq.
(Echinopanax horridum (Sm.)Decne.& Planch.)

SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
cartes

REPARTITION: Aka, CB-Alta, ncOnt
ONTARIO: Lac Supérieur

CARTE: Fernald 1925, Hultén 1968, Soper & Heimburger
1976 Ont

CONDITIONS: Menacée d’extinction dans le Michigan
(Wagner 1976).

Opuntia compressa (Salisb.)Macbr.
(O. humifusa Raf.)

SOURCES: Beschel 1967, CAN, Catling 1974, Kershaw
1976, Kershaw & Morton 1976

REPARTITION: soOnt (Boivin 1967)
ONTARIO: Pointe Pelée
CONDITIONS: Rare au Canada.

PROTECTION: Le commerce international de cette plante
fait l’objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans l'Etat de New
York (McGaugh & Genoways 1976, Zander 1976).

Opuntia fragilis (Nutt.)Haw.

SOURCES: Beschel 1967, Beschel et al. 1970, Catling
1974

REPARTITION: CB-Man, Ont (Boivin 1967)

ONTARIO: Dist. de Rainy River et cté de Lennox &
Addington

CONDITIONS: En voie de disparition dans le Michigan
(Wagner 1976). Menacée d’extinction dans le Wiscon-
sin (Read 1976).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis

Opuntia humifusa = O. compressa

Orobanche fasciculata Nutt.
SOURCES: CAN
REPARTITION: Y, CB-Man, scOnt, (Boivin 1967)
ONTARIO: Grande ile Cloche

CONDITIONS: En voie de disparition dans le Wisconsin
(Read 1976). Menacée d’extinction dans le Michigan
(Wagner 1976). Rare dans l'Indiana (Barnes 1975).

Osmorhiza chilensis H.& A.

Sources: FON 1969 et cartes

REPARTITION: Aka, CB-Sask, Ont-TN, localisé dans l'est
(Boivin 1967)

ONTARIO: Grands Lacs

CARTE: Constance & Shan 1948, Given & Soper 1976
Ont, Hultén 1968

CONDITIONS: Menacée d’extinction dans le Wisconsin
(Read 1976).

38

Osmorhiza obtusa (Coult.& Rose)Fern.
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-Man, ncOnt, Q-TN
ONTARIO: Lac Supérieur
CARTE: Constance & Shan 1948, Hultén 1968
CONDITIONS: Rare dans le Minnesota et le Michigan
(Morley 1972, Wagner 1976).

Oxypolis rigidior (L.)Coult.& Rose
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Soper 1962 Ont

CONDITIONS: Rare au Canada.; peut-être éliminée de
l'Ontario (Soper 1962).

Oxytropis campestris (L.)DC. var. johannensis Fern.
(O. johannensis Fern.)

SOURCES: Cartes

REPARTITION: neOnt-TN

ONTARIO: Baie de James

CARTE: Barneby 1952, Raymond 1950b

Oxytropis deflexa (Pall.)DC. var. foliolosa (Hook.)Barneby
(O. foliolosa Hook.)

Sources: Moir 1958 et cartes

REPARTITION: Aka-TNO, CB-Alta, nOnt, Q, Lab
ONTARIO: Baie d'Hudson

CARTE: Barneby 1952, Hultén 1968, Porsild 1964

Oxytropis foliolosa = O. deflexa var. foliolosa
Oxytropis hudsonica = O. viscida var. hudsonica
Oxytropis ixodes = O. viscida var. viscida

Oxytropis johannensis = O. campestris var. johannensis

Oxytropis splendens Dougl.
SOURCES: Cartes
REPARTITION: Aka-TNO, Alta-Man, nOnt
ONTARIO: Baie d’Hudson et Lac Supérieur

CARTE: Barneby 1952, Given & Soper 1976 Ont, Hultén
1968

Oxytropis viscida Nutt. var. hudsonica (Greene)Barneby
(O. hudsonica (Greene)Fern.)

SOURCES: Kershaw & Morton 1976, Moir 1958 et cartes
REPARTITION: TNO, nOnt-Q

ONTARIO: Baies d'Hudson et de James

CARTE: Barneby 1952, Porsild 1964, Raup 1947

Oxytropis viscida Nutt. var. viscida
(O. ixodes Butt.& Abbe)
SOURCES: Kershaw 1976 et cartes
REPARTITION: Aka-TNO, CB-Alta, ncOnt
ONTARIO: Lac Supérieur
CARTE: Barneby 1952, Given & Soper 1976 Ont

Panax quinquefolius L.

Sources: Beschel et al. 1970, IBP-CT 1974, Kershaw
1976, Kershaw & Morton 1976

REPARTITION: SOnt-Q (Boivin 1967)

CARTE: Argus 1976

CONDITIONS: Rare au Canada. Envoie de disparition dans
le Michigan, l'Illinois et le New Hampshire (Wagner
1976, En voie de disparition dans le Michigan (Wa-
gner 1976). Rare dans le Minnesota (Morley 1972).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d'expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans l'Etat de New
York (McGaugh & Genoways 1976, Zander 1976).

Panicum agrostoides = P. rigidulum

Panicum bicknellii Nash

SOURCES: Beschel et al. 1970, Reznicek 1975-76 et
carte

REPARTITION: SOnt-Q (Fernald 1950)

ONTARIO: Cté de Waterloo et cté de Leeds

CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

CONDITIONS: Rare dans |’Indiana (Barnes 1975).

Panicum calliphyllum Ashe
Sources: Dore & McNeill 1976
REPARTITION: Ont
CARTE: Hitchcock & Chase 1910 E-U
CONDITIONS: Rare au Canada. Menacée dans la Pennsyl-
vanie (Wherry 1975).

Panicum clandestinum L.
(P. latifolium L. var. clandestinum (L.)Pursh)
SOURCES: Carte
REPARTITION: soOnt-Q, NE (Boivin 1967)
ONTARIO: Cté de Norfolk
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

Panicum columbianum Scribn. var. commonsianum

(Ashe)Dore
(P. commonsianum Ashe)

SOURCES: Kershaw 1976 et carte

REPARTITION: soOnt

ONTARIO: Cté de Middlesex et cté d’Elgin

CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

CONDITIONS: Rare au Canada; peut-être allogène (Dore
& McNeill 1976).

Panicum commonsianum = P. columbianum var.
commonsianum

Panicum depauperatum Muhl.
SOURCES: Carte
REPARTITION: Man-Ont-NE (Boivin 1967)
ONTARIO: Lac Supérieur et sOnt
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

Panicum depauperatum var. perlongum = P. perlongum

a

Panicum dichotomum L.
SOURCES: Beschel et al. 1970, Kershaw 1976 et carte
REPARTITION: sOnt (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U
CONDITIONS: Rare au Canada.

Panicum gattingeri Nash

SOURCES: Kershaw 1976 et carte

REPARTITION: soOnt-soQ (Fernald 1950)

ONTARIO: Cté de Middlesex

CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

CONDITIONS: Rare au Canada; peut-être allogène (Dore
& McNeill 1976).

Panicum lanuginosum Elliott var. praecocius (Hitchc.&

Chase)Dore
(P. praecocius Hitchc.& Chase)

SOURCES: Carte

REPARTITION: soOnt (Fernald 1950)

ONTARIO: Cté de Lambton a cté d’Essex

CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

CONDITIONS: Rare au Canada.

Panicum latifolium var. clandestinum = P. clandestinum

Panicum leibergii (Vasey)Scribn. var. baldwinii Lepage
SOURCES: Carte
REPARTITION: o&neOnt (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont
CONDITIONS: Rare au Canada.

Panicum leibergii (Vasey)Scribn. var. leibergii
SOURCES: Carte
REPARTITION: Alta-soOnt (Boivin 1967)
ONTARIO: Lac Ste-Clair
CARTE: Dore & McNeill 1976 Ont
CONDITIONS: Menacée dans la Pennsylvanie (Wherry
1975).

Panicum oligosanthes Schult.
SOURCES: Carte
REPARTITION: CB-sOnt (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

Panicum perlongum Nash
(P. depauperatum Muhl. var. perlongum
(Nash)Boivin)
SOURCES: Kershaw 1976 et carte
REPARTITION: Man-o&sOnt (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

Panicum philadelphicum Bernh.
SOURCES: Carte
REPARTITION: eOnt-soQ (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

Panicum praecocius = P. lanuginosum var. praecocius

39

Panicum rigidulum Bosc.

(P. agrostoides Spreng.)

SOURCES: Catling et al. 1977, Reznicek 1975-76 et carte

REPARTITION: CB, sOnt (Hitchcock et al. 1955-69)

CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U

CONDITIONS: Rare au Canada; peut-être allogène (Dore
& McNeill 1976).

Panicum sphaerocarpon Ell.
SOURCES: Catling et al. 1977, Kershaw 1976 et carte
REPARTITION: sOnt
CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U
CONDITIONS: Rare au Canada.

Panicum spretum Schultes
SOURCES: Catling et al. 1977, Dore & McNeill 1976
REPARTITION: sOnt, sNE (Boivin 1967)
ONTARIO: Cté de Simcoe et Dist. de Muskoka
CARTE: Hitchcock & Chase 1950 E-U

Panicum subvillosum Ashe
SOURCES: Beschel et al. 1970, Dore & McNeill 1976
REPARTITION: Sask-Q (Fernald 1950)
CARTE: Hitchcock & Chase 1950 E-U
CONDITIONS: Rare dans l’Indiana (Barnes 1975).

Parnassia kotzebuei Cham.
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-Man, neOnt, Q-Lab (Boivin
1967)
ONTARIO: Baie de James
CARTE: Hultén 1968, Porsild 1964, Raup 1947

Paronychia canadensis (L.)Wood
SOURCES: Cody 1970, Cruise 1969 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Core 1941
CONDITIONS: Rare au Canada; peut-être éliminée dans
l'Ontario (Cody 1970). Rare dans le Minnesota (Mor-
ley 1972).

Paspalum ciliatifolium Michx.
SOURCES: Dore & McNeill 1976, Reznicek 1975-76
REPARTITION: soOnt
ONTARIO: Cté de Kent et cté d’Essex
CARTE: Hitchcock & Chase 1950 E-U
CONDITIONS: Rare au Canada.

Pedicularis flammea L.
SOURCES: Moir 1958 et cartes
REPARTITION: TNO, Man-nOnt-Q, TN-Lab (Boivin 1967)
ONTARIO: Baies d’Hudson et de James
CARTE: Hultén 1958, Hultén 1968, Porsild 1964

Pedicularis lanceolata Michx.
SOURCES: Stewart & James 1969 et carte
REPARTITION: SMan-Ont (Boivin 1967)
CARTE: Pennell 1935

40

Pedicularis lapponica L.
Sources: Moir 1958 et cartes
REPARTITION: Aka-TNO, Man-nOnt-Q, Lab (Boivin 1967)
ONTARIO: Baies d'Hudson et de James
CARTE: Hultén 1968, Hultén 1971, Porsild 1964

Pedicularis sudetica Willd. ssp. interioides Hult.
SOURCES: Moir 1958 et cartes
REPARTITION: Aka-TNO, Man-nOnt-Q
ONTARIO: Baies d'Hudson et de James
CARTE: Hultén 1968, Hultén 1971

Pellaea atropurpurea (L.)Link

SOURCES: Beschel et al. 1970, FON 1969, IBP-CT 1974
et cartes

REPARTITION: CB-Alta, Sask, s&eOnt-Q
CARTE: Brunton & Lafontaine 1974b Ont-Q, Rigby &

Britton 1970 Can, Soper 1963 Ont, Tryon 1957, Tryon
1972

CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976). Menacée d’extinction
dans le Michigan (Wagner 1976). Extrêmement rare
dans l'ouest de l'Etat de New York (Clinton Herba-
rium 1974). Rare dans le Minnesota (Morley 1972).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Peltandra virginica (L.)Schott & Endl.
SOURCES: Kershaw 1976, Laking 1951 et carte
REPARTITION: soOnt-soQ (Boivin 1967)
ONTARIO: Cté d'Oxford, cté de Norfolk et région de
Niagara
CARTE: Soper 1962 Ont
CONDITIONS: Rare au Canada.

Penstemon gracilis Nutt.
Sources: Reznicek 1975-76 et carte
REPARTITION: CB-oOnt (Boivin 1967)
CARTE: Pennell 1935

Petalostemum candidum (Willd.)Michx.
SOURCES: Reznicek 1975-76
REPARTITION: sAlta-oOnt (Boivin 1967)

Petalostemum purpureum (Vent.)Rydb.
SOURCES: Reznicek 1975-76
REPARTITION: sAlta—Ont (Boivin 1967)

CONDITIONS: En voie de disparition dans le Michigan
(Wagner 1976).

Phacelia franklinii (R.Br.)Gray
SOURCES: Reznicek 1975-76 et cartes

REPARTITION: Aka-TNO, CB, Alta, Sask-Man, ncOnt,
localisé

ONTARIO: Lac Supérieur

CARTE: Gillett 1960, Given & Soper 1976 Ont, Hultén
1969, Porsild 1966

Phegopteris hexagonoptera (Michx.)Fée
(Dryopteris hexagonoptera Michx., Thelypteris
hexagonoptera (Michx.)Weath. )

SOURCES: Britton 1976, Cruise 1969, IBP-CT 1974, Ker-
shaw 1976, Lafontaine 1974, Stewart & James 1969
et carte

REPARTITION: SOnt-soQ (Boivin 1967)

CARTE: Hultén 1964

CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Wisconsin (Read 1976). Rare dans le Minne-
sota (Morley 1972).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Phleum alpinum L.

(P. commutatum Gaud.)

SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
cartes

REPARTITION: Aka-TNO, CB-Sask, nOnt-Q, NE, TN-Lab
(Boivin 1967)

ONTARIO: Baies d’Hudson et de James

CARTE: Dore & McNeill 1976 Ont, Hultén 1968

Phleum commutatum = P. alpinum

Phlox pilosa L.
SOURCES: Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
CARTE: Levin & Smith 1966, Wherry 1955
CONDITIONS: Rare au Canada.

Phlox subulata L.
SOURCES: Carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Wherry 1955
CONDITIONS: Rare au Canada.

Phyla lancolata (Michx.)Greene var. recognita (Fern.&

Griscom)Soper
(Lippia lanceolata Michx. var. recognita Fern.&
Grisc.)

SOURCES: Kershaw 1976 et carte

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Lac Ste-Clair et cté d’Essex

CARTE: Soper 1962 Ont

CONDITIONS: Rare au Canada.

Phyllitis scolopendrium (L.)Newm. var. americana Fern.

Sources: Catling 1974, Faust 1969, FON 1969, Kershaw
1976, Kershaw & Morton 1976, Lafontaine 1974, Love
& Love 1973 et cartes

REPARTITION: sOnt

ONTARIO: Région de Niagara et Pén. Bruce

CARTE: Fernald 1935, Hultén 1964, Soper 1954 Ont

CONDITIONS: Rare au Canada. En voie de disparition aux
Etats-Unis (Smithsonian Institution 1975. United
States 1976). En voie de disparition dans le Michigan
(Wagner 1976). Extrêmement rare dans l'ouest de
l'Etat de New York (Clinton Herbarium 1974).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Cee nee eee

Pinus rigida Mill.

SOURCES: Beschel et al. 1970, IBP-CT 1974, Kershaw
1976, Lafontaine 1974 et cartes

REPARTITION: seOnt-soQ

ONTARIO: Cté de Leeds

CARTE: Hosie 1969 Can, Little 1971, Smouse & Saylor
1973, Soper 1960 Ont, VanderKloet 1973

CONDITIONS: Rare au Canada.

Piperia unalascensis (Spreng.)Rydb.
(Habenaria unalascensis (Spreng.)Wats.)

Sources: FON 1969 et cartes

REPARTITION: Aka-Y, CB-Alta, scOnt, Q

ONTARIO: Pen. Bruce et ile Manitoulin

CARTE: Case 1964 Grande Lacs, Fernald 1925, Given &
Soper 1976 Ont, Luer 1975, Soper 1960 Ont

CONDITIONS: Menacée d'extinction dans le Michigan
(Wagner 1976).

PROTECTION: Le commerce international de cette plante
fait l’objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis

Plantago cordata Lam.
SOURCES: Kershaw 1976 et cartes
REPARTITION: sOnt (Boivin 1967)
CARTE: Bassett 1967, Bassett 1973, Tessene 1969
CONDITIONS: Rare au Canada. Eliminée dans le Michigan
(Wagner 1976). Rare dans le Wisconsin et l’Indiana
(Read 1976, Barnes 1975).

Plantago maritima L.
Sources: Moir 1958 et carte
REPARTITION: Aka, CB, Man-nOnt-Lab
ONTARIO: Baies d’Hudson et de James
CARTE: Bassett 1973

Platanthera blephariglottis (Willd.)Lindl.
(Habenaria blephariglottis(Willd.)Hook.)

Sources: Catling 1974, Lafontaine & White 1974 et
cartes

REPARTITION: SOnt-TN

CARTE: Case 1964 Grands Lacs, Correll 1941, Luer 1975,
Soper 1960 Ont

CONDITIONS: Eliminée dans l'Illinois (Paulson & Schweg-
man 1976). En voie de disparition dans le New Hamp-
shire (Hodgdon 1973).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans l'Etat de New
York (McGaugh & Genoways 1976 et le Vermont (Ver-
mont 1957, 1974).

41

Platanthera ciliaris (L.)Lindl.
(Habenaria ciliaris (L.)R.Br.)
Sources: Brunton 1974-75, Catling & Whiting 1976,
Kershaw 1976 et cartes

REPARTITION: soOnt
ONTARIO: Cté d’Essex et ile Walpole

CARTE: Case 1964 Grands Lacs, Luer 1975, Soper 1960
Ont

CONDITIONS: Rare et peut-être éliminée du Canada
(Brunton 1974-75, Catling & Whiting 1976). Menacée
d'extinction dans le Michigan (Wagner 1976).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans l'Etat de New
York (McGaugh & Genoways 1976 et le Vermont (Ver-
mont 1957, 1974).

Platanthera flava (L.)Lindl. var. herbiola (R.Br.)Luer
(Habenaria flava (L.)R.Br. var. herbiola (R.Br.)Ames
& Correll

Sources: Beschel et al. 1970, Brunton 1974-75 et
cartes

REPARTITION: sOnt-NE

CARTE: Ayensu 1975 E-U, Case 1964 Grands Lacs, Luer
1975, Soper 1960 Ont

CONDITIONS: Rare au Canada. Menacée d’extinction aux
Etats-Unis (Ayensu 1975, Smithsonian Institution
1975). En voie de disparition dans l'Illinois (Paulson &
Schwegman 1976). Menacée d'extinction dans le Wis-
consin (Read 1976). Rare dans le Michigan (Wagner
1976).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans le Minnesota,
le Wisconsin, l'Etat de New York (McGaugh & Geno-
ways 1976)

Platanthera leucophaea (Nutt.)Lindl.
(Habenaria leucophaea (Nutt.)Gray)

Sources: Beschel et al. 1970, Catling 1974, FON 1969,
IBP-CT 1974, Kershaw 1976, Kershaw & Morton 1976
et cartes

REPARTITION: SOnt-NB, NE (Boivin 1967)

CarTE: Ayensu 1975 E-U, Case 1964 Grands Lacs, Luer
1975, Soper 1960 Ont ;

CONDITIONS: Rare au Canada. Menacée d'extinction aux
Etats-Unis (Ayensu 1975, Smithsonian Institution
1975). En voie de disparition dans le Wisconsin et
l'Illinois (Read 1976, Paulson & Schwegman 1976).
Menacée d'extinction dans le Michigan (Wagner
1976).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d'expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans le Minnesota,
le Wisconsin et l'Etat de New York (McGaugh & Geno-
ways 1976).

42

Poa alpigena (Fries)Lindm.
(P. pratensis L. var. alpigena Fries)
Sources: Reznicek 1975-76 et cartes
REPARTITION: Aka-TNO, CB, Sask-nOnt-Lab
ONTARIO: Baies d'Hudson et de James
CARTE: Dore & McNeill 1976 Ont, Hultén 1964, Hultén
1968, Porsild 1964

Poa arctica R.Br.
Sources: Cartes
REPARTITION: Aka-TNO, CB-Alta, Man-nOnt-Q, TN-Lab
(Boivin 1967)
ONTARIO: Baie d'Hudson
CARTE: Dore & McNeill 1976 Ont, Hultén 1968, Porsild
1964

Poa canbyi (Scribn.)Howell
Sources: Dore & McNeill 1976, Kershaw 1976, Kershaw
& Morton 1976 et cartes
REPARTITION: Aka, CB-Man, ncOnt, Q
ONTARIO: Lac Supérieur
CARTE: Hultén 1968, Poisild 1966

Poa interior Rydb.
(P. nemoralis var. interior (Rydb.)Butt.& Abbe)
SOURCES: Cartes
REPARTITION: CB-nOnt-Q (Boivin 1967)
CARTE: Dore & McNeill 1976 Ont, Ramaley 1939

Poa nemoralis var. interior = P. interior
Poa pratensis var. alpigena = P. alpigena

Podostemum ceratophyllum Michx.
Sources: Brunton 1974-75 et carte
REPARTITION: eOnt-NB (Boivin 1967)
CARTE: Raymond 1950b

Polanisia dodecandra (L.)DC.
(P. graveolens Raf.)
Sources: Beschel et al. 1970, Cruise 1969, Kershaw
1976 et carte
REPARTITION: Sask-sOnt-soQ (Boivin 1967)
CARTE: Iltis 1958

Polanisia graveolens = P. dodecandra

Polygala incarnata L.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Fernald 1937
CONDITIONS: Rare au Canada. Eliminée dans la Pennsyl-
vania (Wherry 1975). En voie de disparition dans le
Wisconsin (Read 1976).

Polygonatum biflorum (Walt.)Ell.
(P. canaliculatum (Muhl.)Pursh)
SOURCES: Beschel et al. 1970, Cruise 1969, Kershaw
1976 et carte
REPARTITION: seSask-sOnt (Boivin 1967)
CARTE: Cruise & Haber 1972 Ont, Ownbey 1944
CONDITIONS: Rare au Canada.

Polygonatum canaliculatum = P. biflorum

Polygonella articulata (L.)Meisn.
SOURCES: Brunton 1974-75, Kershaw 1976 et carte
REPARTITION: Ont-soQ (Boivin 1967)
CARTE: Horton 1963, Soper 1960 Ont
CONDITIONS: Rare au Canada. Rare dans l'Indiana (Bar-
nes 1975).

Polygonum careyi Olney
Sources: Brunton 1974-75, CAN, Catling et al. 1977,
Cruise 1969
REPARTITION: cOnt-NB (Boivin 1967)
CONDITIONS: Menacée d'extinction dans le Michigan
(Wagner 1976). Rare dans l'Indiana (Barnes 1975).

Polygonum ramosissimum Michx.
Sources: Reznicek 1975-76
REPARTITION: CB-NE (Boivin 1967)
CONDITIONS: Rare dans le Minnesota (Morley 1972).

Polygonum tenue Michx.
SOURCES: Cruise 1969, Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Polymnia canadensis L.
SOURCES: Kershaw 1976 et carte
REPARTITION: sOnt (Boivin 1967)
CARTE: Soper 1962 Ont, Wells 1969
CONDITIONS: Rare au Canada.

Polystichum braunii (Spenner)Fée var. purshii Fern.
SOURCES: Britton 1976, Catling 1974 et carte
REPARTITION: ncOnt-TN (Fernald 1950)

ONTARIO: Lac Supérieur

CARTE: Hultén 1964, Soper 1977 Ont

CONDITIONS: En voie de disparition dans le Wisconsin
(Read 1976)., Soper 1977

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976 et le Vermont (Vermont
1957, 1974).

Polystichum lonchitis (L.)Roth

SOURCES: Britton 1976, Catling 1974 et cartes

REPARTITION: Aka-Y, CB-Alta, Ont, Q-TN, localisé (Boi-
vin 1967)

CARTE: Fernald 1935, Given & Soper 1976 Ont, Hultén
1958, Roland 1942, Soper 1954 Ont

CONDITIONS: Extrêmement rare dans l'ouest de l'Etat de
New York (Clinton Herbarium 1974).

Potamogeton bicupulatus Fern.

(P. capillaceus auct.)

SOURCES: Kershaw 1976, Reznicek 1975-76, Soper
1975-76 et carte

REPARTITION: scOnt

ONTARIO: eBaie Georgienne

CARTE: Reznicek & Bobbette 1976

CONDITIONS: Rare au Canada.

Potamogeton capillaceus = P. bicupulatus

Potamogeton confervoides Reichenb.

SOURCES: Brunton 1974-75, Reznicek 1975-76, Soper
1975-76

REPARTITION: Ont-NB, NE-Lab (Boivin 1967)

CARTE: Fernald 1932

CONDITIONS: Eliminée dans le Wisconsin (Read 1976).
Menacée d'extinction dans le Michigan (Wagner
1976).

Potamogeton hillii Morong.

Sources: Dale 1976, Kershaw 1976 et carte

REPARTITION: soOnt

ONTARIO: St-Thomas

CARTE: Fernald 1932, Haynes 1974

CONDITIONS: Rare au Canada. Menacée d'extinction aux
Etats-Unis (Smithsonian Institution 1975). Eliminée
dans l'Ohio (Stuckey & Roberts 1976). Menacée dans
le Michigan et la Pennsylvanie (Wagner 1976, Wherry
1975).

Potamogeton oakesianus Robbins
Sources: Brunton 1974-75, Cruise 1969, Reznicek
1975-76 et carte
REPARTITION: Ont-Lab (Boivin 1967)
CARTE: Meusel et al. 1965, Ogden 1943

Potamogeton perfoliatus L. var. perfoliatus
Sources: Reznicek 1975-76 et carte
REPARTITION: cOnt-NE (Boivin 1967)
CARTE: Hultén 1964, Ogden 1943

Potamogeton pulcher Tuck.

SOuRCES: Kershaw 1976, Reznicek 1975-76

REPARTITION: soOnt, NE (Boivin 1967)

CARTE: Ogden 1943

CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976). Menacée dans le
Michigan et la Pennsylvanie (Wagner 1976, Wherry
1975). Rare dans |’Indiana et l'Ohio (Barnes 1975,
Stuckey & Roberts 1976).

Potamogeton vaseyi Robbins

SOURCES: Beschel et al. 1970, Reznicek 1975-76 et
carte

REPARTITION: Ont-NB (Boivin 1967)

CARTE: Fernald 1932

CONDITIONS: Menacée dans le Wisconsin, le Michigan et
la Pennsylvanie (Read 1976, Wagner 1976, Wherry
1975).

Potentilla gracilis Dougl.
SOURCES: Cartes
REPARTITION: Aka-Y, CB-nOnt-Q, localisé (Boivin 1967)
ONTARIO: Lac Supérieur et Dist. Timiskaming
CARTE: Given & Soper 1976 Ont, Hultén 1968

Potentilla hippiana Lehm.
SOURCES: Carte
REPARTITION: Aka, CB-Ont, Q (Boivin 1967)
CARTE: Hultén 1968

43

Potentilla paradoxa Nutt.
SOURCES: Beschel et al. 1970, Cruise 1969
REPARTITION: seCB-Ont (Boivin 1967)
CONDITIONS: Menacée dans la Pennsylvanie (Wherry
1975).

Potentilla pensylvanica L.
SOURCES: Brunton 1974-75 et carte
REPARTITION: Aka-TNO, CB-nOnt-Q (Boivin 1967)
CARTE: Given & Soper 1976 Ont, Hultén 1968

Potentilla pulchella R.Br.
SOURCES: Moir 1958 et cartes
REPARTITION: Aka-TNO, Man, nOnt-Q
ONTARIO: Baies d’Hudson et de James
CARTE: Hultén 1958, Hultén 1968, Porsild 1964

Potentilla rivalis Nutt.
SOURCES: Brayshaw 1964
REPARTITION: CB-oOnt (Boivin 1967)

Primula intercedens Fern.
SouRCcES: FON 1969, Krotkov 1940
REPARTITION: scOnt (Boivin 1967)
ONTARIO: Ile Manitoulin, lac Nipissing et pén. Bruce
CONDITIONS: Rare au Canada.

Prunus americana Marsh.
SOURCES: Cartes
REPARTITION: seSask-soOnt (Boivin 1967)
CARTE: Groh & Senn 1940 Ont-Q, Hosie 1969 Can, Soper
& Heimburger 1976 Ont
CONDITIONS: Rare au Canada.

Ptelea trifoliata L.

SOuRCES: Kershaw 1976, Lafontaine 1974 et cartes

REPARTITION: soOnt-soQ (Boivin 1967)

CARTE: Bailey et al. 1970, Fox & Soper 1952 Ont, Soper
& Heimburger 1961 Ont, Soper & Heimburger 1976
Ont

CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976).

Pterospora andromeda Nutt.

Sources: Beschel et al. 1970, Cruise 1969, FON 1969 et
carte

REPARTITION: CB-Sask, sOnt-Q, IPE localisé dans l’est

CARTE: Bakshi 1959, Gillett 1972 Ont-Q

CONDITIONS: En voie de disparition dans le Wisconsin et
le New Hampshire (Read 1976, Hodgdon 1973). Me-
nacée d'extinction dans le Michigan (Wagner 1976).
Extrémement rare dans l'ouest de l'Etat de New York
(Clinton Herbarium 1974).

Puccinellia lucida Fern.& Weath.
Sources: CAN et carte
REPARTITION: CB, Man-neOnt-NB (Fernald 1950)
ONTARIO: Baie de James
CARTE: Dore & McNeill 1976 Ont

44

Puccinellia nuttalliana (Schult.)Hitchc.
SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
cartes
REPARTITION: Aka-TNO, CB-Man, ncOnt (Boivin 1967)
ONTARIO: Lac des bois et Dist. de Thunder Bay
CARTE: Dore & McNeill 1976 Ont, Hultén 1968

Pycnanthemum incanum (L.)Michx.

SOURCES: Kershaw 1976

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Hamilton

CARTE: Grant & Epling 1943

CONDITIONS: Rare et peut-être éliminée du Canada. Ex-
trêmement rare dans l'ouest de l'Etat de New York
(Clinton Herbarium 1974).

Pycnanthemum pilosum Nutt.
SOURCES: Kershaw 1976, Pratt 1974 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Grant & Epling 1943
CONDITIONS: Rare au Canada.

Pycnanthemum tenuifolium Schrader
SOURCES: Kershaw 1976
REPARTITION: SOnt-soQ (Boivin 1967)
CONDITIONS: Rare au Canada.

Pyrola grandiflora Rad.
SOURCES: Cartes
REPARTITION: Aka-TNO, CB, Man-nOnt-Q, Lab
ONTARIO: Baies d’Hudson et de James
CARTE: Given & Soper 1976 Ont, Hultén 1958, Hultén
1968, Porsild 1964, Young 1971

Quercus bicolor Willd.
SOURCES: Kershaw 1976 et cartes
REPARTITION: sOnt-s0Q (Boivin 1967)
CARTE: Fox & Soper 1954 Ont, Hosie 1969 Can, Little
1971, Soper 1960 Ont
CONDITIONS: Rare au Canada.

Quercus ellipsoidalis E.J.Hill
Sources: Maycock 1976 et carte
REPARTITION: noOnt
CARTE: Little 1971, Wadmond 1933
CONDITIONS: Rare au Canada. Rare dans l'Indiana (Bar-
nes 1975).

Quercus muehlenbergii Engelm.
SOURCES: IBP-CT 1974, Kershaw 1976 et cartes
REPARTITION: sOnt (Boivin 1967)
CARTE: Fox & Soper 1954 Ont, Hosie 1969 Can, Little
1971, Soper 1960 Ont
CONDITIONS: Rare au Canada. Rare dans le Minnesota
(Morley 1972).

Quercus palustris Muenchh.
SOURCES: Kershaw 1976, Stewart & James 1969 et
cartes
REPARTITION: soOnt (Boivin 1967)
CARTE: Fox & Soper 1954 Ont, Hosie 1969 Can, Little
1971, Soper 1960 Ont
CONDITIONS: Rare au Canada.

Quercus prinoides Willd.
SOURCES: Kershaw 1976 et cartes
REPARTITION: soOnt (Boivin 1967)

CARTE: Fox & Soper 1954 Ont, Soper & Heimburger 1961
Ont, Soper & Heimburger 1976 Ont

CONDITIONS: Rare au Canada. Rare dans |'Indiana (Bar-
nes 1975).

Quercus prinus L.
SOURCES: Kershaw 1976 et cartes
REPARTITION: soOnt (Boivin 1967)

CARTE: Fox & Soper 1954 Ont, Hosie 1969 Can, Little
1971

CONDITIONS: Rare au Canada.

Ranunculus fascicularis Muhl.
Sources: Brunton 1974-75, IBP-CT 1974
REPARTITION: seMan-sOnt (Boivin 1967)

CONDITIONS: Rare au Canada. En voie de disparition
dans le New Hampshire (Hodgdon 1973).

Ranunculus hispidus Michx. var. marilandicus
(Poir.)Benson

SOURCES: Beschel et al. 1970, Cruise 1969, IBP-CT
1974, Kershaw 1976

REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Ranunculus pallasii Schlecht.
SOURCES: Cartes
REPARTITION: Aka-TNO, Man-nOnt-Q, Lab
ONTARIO: Baies d’Hudson et de James
CARTE: Hultén 1968, Hultén 1971, Porsild 1964

Ranunculus pedatifidus Sm. ssp. affinis (R.Br.)Hult.
SouRCES: Moir 1958 et cartes
REPARTITION: Aka-TNO, CB-Alta, Sask, Man-nOnt-
Q, TN-Lab
ONTARIO: Baies d’Hudson et de James
CARTE: Hultén 1968, Hultén 1971

Ranunculus rhomboideus Goldie

SOURCES: Beschel et al. 1970, Cruise 1969, Reznicek
1975-76

REPARTITION: CB-Ont, localisé (Boivin 1967)

Ratibida columnifera (Nutt.)Woot.& Standl.
SOURCES: Cartes
REPARTITION: seCB-Ont (Boivin 1967)
CARTE: Richards 1968, Soper 1960 Ont
CONDITIONS: Rare dans l’Indiana (Barnes 1975).

Ratibida pinnata (Vent.) Barnh.
SOURCES: Kershaw 1976 et cartes
REPARTITION: soOnt (Boivin 1967)
CARTE: Richards 1968, Soper 1960 Ont
CONDITIONS: Rare au Canada.

Rhexia virginica L.

SouRCES: Brunton 1974-75, Catling et al. 1977 et cartes

REPARTITION: SOnt, ONE (Boivin 1967)

ONTARIO: eBaie Georgienne a Parc Prov. Algonquin

CARTE: James 1956, Kral & Bostick 1969, Soper 1956
Ont

CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Wisconsin (Read 1976). Rare dans le Michi-
gan (Wagner 1976).

Rhinanthus borealis (Sterneck)Chabert
Sources: Moir 1958
REPARTITION: nOnt, Q, TN (Fernald 1950)
ONTARIO: Baie d’Hudson

Rhododendron lapponicum Wahl.
SOURCES: Moir 1958 et cartes
REPARTITION: Aka-TNO, CB, Alta, Man-nOnt-Q, TN-Lab
ONTARIO: Baies d’Hudson et de James

CARTE: Gillett 1971, Given & Soper 1976 Ont, Hultén
1958, Hultén 1968, Prosild 1964

Rhus copallina L.
SourceS: Cruise 1969, IBP-CT 1974, Kershaw 1976 et
cartes
REPARTITION: SOnt (Boivin 1967)
CARTE: Barkley 1937, Soper & Heimburger 1961 Ont,
Soper & Heimburger 1976 Ont, VanderKloet 1968
Ont-NY

CONDITIONS: Rare au Canada. Menacée dans la Pennsyl-
vanie (Wherry 1975).

Rhynchospora capitellata (Michx.)Vahl
SOURCES: Beschel et al. 1970, Catling et al. 1977, IBP-
CT 1974, Reznicek 1975-76 et cartes

REPARTITION: SOnt-NB, NS (Boivin 1967)
CARTE: Gale 1944, Wood 1970, Wood 1972

Rosa setigera Michx.
Sources: CAN, Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Cté d’Essex
CARTE: Soper & Heimburger 1976 Ont
CONDITIONS: Rare au Canada.

Sabatia angularis (L.)Pursh

Sources: DAO, Gillett 1963, Kershaw 1976

REPARTITION: soOnt

CARTE: Wilbur 1955

CONDITIONS: Rare au Canada. Menacée d’extinction
dans le Michigan (Wagner 1976).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Sagina procumbens L.
SOURCES: Beschel et al. 1970
REPARTITION: CB, Ont-NE, TN-Lab (Boivin 1967)
CARTE: Meusel et al. 1965

45

Sagittaria engelmanniana J.G.Smith var. brevirostra
(Mack.& Bush)Bogin
SOURCES: Reznicek 1975-76
REPARTITION: soOnt (Boivin 1967)
CARTE: Bogin 1955
CONDITIONS: Rare au Canada.

Sagittaria graminea Michx. var. cristata (Engelm.)Bogin
SOURCES: Kershaw 1976 et carte
REPARTITION: scOnt (Boivin 1967)
ONTARIO: Ile Manitoulin et pén. Bruce
CARTE: Bogin 1955
CONDITIONS: Rare au Canada. Rare dans le Minnesota
(Morley 1972).

Salicornia europaea L.
SOURCES: Reznicek 1975-76 et cartes
REPARTITION: Aka-Y, CB-Man, neOnt-TN, localisé
ONTARIO: Baie de James
CARTE: Hultén 1968, Hultén 1971

Salix arctica Pall.
Sources: Argus 1974-76, Moir 1958 et cartes
REPARTITION: Aka-TNO, CB-Alta, Man, nOnt-Q, TN-Lab
ONTARIO: Baies d’Hudson et de James
CARTE: Hultén 1971, Porsild 1964, Soper & Heimburger
1976 Ont

Salix arctophila Cock.
Sources: Argus 1974-76, Moir 1958 et cartes
REPARTITION: Aka-TNO, Sask-Man, nOnt-Q, TN-Lab
ONTARIO: Baies d’Hudson et de James
CARTE: Hultén 1968, Porsild 1964, Soper & Heimburger
1976 Ont

Salix brachycarpa Nutt. ssp. brachycarpa
Sources: Argus 1974-76, Moir 1958 et cartes
REPARTITION: CB-Sask, Man-nOnt-nQ
ONTARIO: Baies d'Hudson et de James
CARTE: Argus 1965, Raup 1943 eCan, Soper & Heimbur-
ger 1976 Ont

Salix calcicola = S. lanata ssp. calcicola

Salix lanata L. ssp. calcicola (Fern.& Wieg.)Hult.
(S. calcicola Fern.& Wieg.)
Sources: Argus 1974-76, Moir 1958 et cartes
REPARTITION: TNO, Man-nOnt-nQ, TN-Lab
ONTARIO: Baies d'Hudson et de James
CARTE: Hultén 1971, Porsild 1964, Soper & Heimburger
1976 Ont ;

Salix maccalliana Rowlee
Sources: Argus 1974-76 et cartes
REPARTITION: TNO, CB-nOnt-Q (Boivin 1967)
CARTE: Raup 1959, Soper & Heimburger 1976 Ont

Salix reticulata L.
Sources: Argus 1974-76, Moir 1958 et cartes
REPARTITION: Aka-TNO, CB, Sask-nOnt-Q, TN-Lab
(Boivin 1967)
ONTARIO: Baies d'Hudson et de James
CARTE: Hultén 1968, Hultén 1971, Porsild 1964, Soper &
Heimburger 1976 Ont

46

Salix sericea Marsh.
Sources: Argus 1974-76 et carte
REPARTITION: soOnt-NB, NE (Boivin 1967)
ONTARIO: Pointe Pelée
CARTE: Soper & Heimburger 1976 Ont
CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976).

Salix vestita Pursh
Sources: Argus 1974-76, Moir 1958 et cartes
REPARTITION: TNO, CB-Alta, Man-nOnt-Q, TN-Lab
(Boivin 1967)
ONTARIO: Baie d’Hudson
CARTE: Raup 1943 eCan, Raup 1959, Soper & Heimbur-
ger 1976 Ont

Sanicula canadensis L.
Sources: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Shan & Constance 1951
CONDITIONS: Rare au Canada.

Satureja arkansana = S. glabella var. angustifolia

Satureja glabella (Michx.)Briq. var. angustifolia
(Torr.)Svens.
(S. arkansana (Nutt.)Briq.)
Sources: Cruise 1969, FON 1969
REPARTITION: sOnt (Boivin 1967)
CONDITIONS: Rare au Canada. En voie de disparition
dans le Wisconsin (Read 1976).

Saxifraga aizoides L.
SOURCES: Soper & Maycock 1963 et cartes
REPARTITION: Y-TNO, CB-Alta, Man-nOnt-Q, NE-Lab
(Boivin 1967)
ONTARIO: Baies d’Hudson et de James
CARTE: Given & Soper 1976 Ont, Hultén 1958, Porsild
1964, Raup 1947

Saxifraga caespitosa L.
Sources: Moir 1958 et cartes
REPARTITION: Aka-TNO, CB-Alta, Man-nOnt-Q, TN-Lab
(Boivin 1967)
ONTARIO: Baie d'Hudson
CARTE: Hultén 1958, Hultén 1968

Saxifraga cernua L.

Sources: CAN, Kershaw 1976, Kershaw & Morton 1976,
Moir 1958

REPARTITION: Aka, CB-Alta, noOnt, Q, Lab (Boivin 1967)

ONTARIO: Baie d'Hudson

CARTE: Porsild 1964

CONDITIONS: En voie de disparition dans le New Hamp-
shire (Hodgdon 1973).

Saxifraga pensylvanica L.
SOURCES: DAO, Kershaw 1976, Looman 1973
REPARTITION: Man-Ont (Boivin 1967)
CARTE: Burns 1942
CONDITIONS: Rare au Canada.

Scirpus clintonii Gray
SOURCES: Reznicek 1975-76
REPARTITION: Alta-Sask, Ont-NB (Boivin 1967)
CARTE: Lepage 1969 Q

Scirpus heterochaetus Chase
Sources: DAO, Kershaw 1976
REPARTITION: sMan, eOnt-soQ (Fernald 1950)
ONTARIO: Ingleside
CONDITIONS: Rare au Canada. Menacée dans la Pennsyl-
vanie (Wherry 1975).

Scirpus maritimus L. var. paludosus (Nels.)Kukenth.
(S. paludosus Nels.)
Sources: Kershaw 1976, Kershaw & Morton 1976 et
carte
REPARTITION: Aka-TNO, CB-neOnt-NE (Boivin 1967)
ONTARIO: Baie de James
CARTE: Hultén 1968

Scirpus micranthus = Hemicarpha micrantha
Scirpus paludosus = S. maritimus Var. paludosus

Scirpus smithii Gray
SOURCES: Kershaw 1976, Reznicek 1975-76
REPARTITION: Ont-sQ (Boivin 1967)
CONDITIONS: Rare au Canada. Menacée dans la Pennsyl-
vanie (Wherry 1975).

Scirpus torreyi Olney
SOURCES: Reznicek 1975-76
REPARTITION: Ont-NB (Boivin 1967)
CONDITIONS: Rare au Canada. Eliminée dans l'Illinois
(Paulson & Schwegman 1976). Rare dans le Michigan
et I'Indiana (Wagner 1976, Barnes 1975).

Scirpus verecundus Fern.
SOURCES: Kershaw 1976, Reznicek 1975-76
REPARTITION: sOnt
CONDITIONS: Rare au Canada.

Scleria triglomerata Michx.
SOURCES: Kershaw 1976, Reznicek 1975-76 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Fairey 1967 seE-U, Soper 1962 Ont

CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Wisconsin (Read 1976). Rare dans le Minne-
sota (Morley 1972).

Scleria verticillata Muhl.

Sources: Beschel et al. 1970, FON 1969, Kershaw 1976,
Reznicek 1975-76 et carte

REPARTITION: sOnt (Boivin 1967)

CARTE: Soper 1962 Ont

CONDITIONS: Rare au Canada. Menacée dans le Wiscon-
sin et la Pennsylvanie (Read 1976, Wherry 1975).
Rare dans le Minnesota (Morley 1972).

Scutellaria nervosa Pursh var. calvifolia Fern.
Sources: CAN, Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Kingsville
CONDITIONS: Rare au Canada; peut-être éliminée de
l'Ontario (Scoggan 1976).

Senecio glabellus Poir.
Sources: Campbell & Reznicek 1976, CAN, Kershaw
1976
REPARTITION: soOnt
ONTARIO: Ile Pelée
CONDITIONS: Rare au Canada.

Senecio obovatus Muhl.
Sources: DAO, FON 1969, Kershaw 1976 et carte
REPARTITION: scOnt-sQ (Fernald 1950)
ONTARIO: Pén. Bruce
CARTE: Barkley 1962
CONDITIONS: Rare au Canada.

Silene virginica L.
Sources: Kershaw 1976, Scoggan 1976
REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada; peut-étre éliminée de
l'Ontario (Scoggan 1976).

Silphium perfoliatum L.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt-soQ (Boivin 1967)
CARTE: Soper 1962 Ont
CONDITIONS: Rare au Canada. Menacée d’extinction
dans le Michigan (Wagner 1976).

Silphium terebinthinaceum Jacq.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Soper 1962 Ont
CONDITIONS: Rare au Canada.

Sisyrinchium albidum Raf.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Windsor
CARTE: Marchand & Grear 1975 Ont
CONDITIONS: Rare au Canada.

Smilax ecirrhata (Engelm.)Wats.
SOURCES: Cruise 1969, Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
CARTE: Mangaly 1968 E-U
CONDITIONS: Rare au Canada.

Smilax illinoensis Mangaly
SOURCES: Campbell & Reznicek 1976, Kershaw 1976
REPARTITION: Ont
CARTE: Mangaly 1968 E-U
CONDITIONS: Rare au Canada.

Smilax lasioneuron Hook.
SOURCES: Cruise 1969
REPARTITION: Sask-soOnt (Boivin 1967)
CARTE: Mangaly 1968 E-U

47

Smilax rotundifolia L.

SOURCES: Cruise 1969, Kershaw 1976 et cartes

REPARTITION: soOnt, NE (Boivin 1967)

ONTARIO: Pointe Pelée et Leamington

CARTE: Duncan 1967 seE-U, Soper & Heimburger 1961
Ont, Soper & Heimburger 1976 Ont

CONDITIONS: Rare et peut-étre éliminée du Canada (So-
per & Heimburger 1976).

Solidago arguta Ait.
Sources: Beschel et al. 1970, Kershaw 1976, Stewart &
James 1969
REPARTITION: Ont (Boivin 1967)
CONDITIONS: Rare au Canada.

Solidago houghtonii T.& G.

Sources: CAN, Kershaw 1976, Kershaw & Morton 1976,
Reznicek 1975-76 et cartes

REPARTITION: scOnt

ONTARIO: Ile Manitoulin et pén. Bruce

CARTE: Given & Soper 1976 Ont, Guire & Voss 1963
Grands Lacs

CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Michigan (Wagner 1976).

Solidago jejunifolia Steele
(S. uliginosa Nutt. var. jejunifolia (Steele)Boivin)
SOURCES: Boivin 1967
REPARTITION: scOnt
ONTARIO: Pén. Bruce
CONDITIONS: Rare au Canada.

Solidago missouriensis Nutt.
SOURCES: Cruise 1969 et carte
REPARTITION: CB-oOnt, localisé (Boivin 1967)
CARTE: Given & Soper 1976 Ont

Solidago ohioensis Riddell
SOURCES: Cruise 1969, FON 1969, Krotkov 1940
REPARTITION: sOnt (Boivin 1967)
ONTARIO: Pén. Bruce a soOnt
CONDITIONS: Rare au Canada. Menacée d’extinction
dans le Wisconsin (Read 1976).

Solidago patula Muhl.
SOURCES: Cruise 1969
REPARTITION: sOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Solidago puberula Nutt.
Sources: Beschel et al. 1970, Lafontaine & White 1974
REPARTITION: eOnt-NE (Boivin 1967)

Solidago riddellii Frank
Sources: Reznicek 1975-76
REPARTITION: seMan-Ont (Boivin 1967)

Solidago rigida L. var. rigida
SOURCES: Reznicek 1975-76
REPARTITION: sOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

48

Solidago sciaphila Steele
SOURCES: Kershaw 1976
REPARTITION: scOnt (Boivin 1967)
ONTARIO: Baie Georgienne
CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Wisconsin (Read 1976).

Solidago speciosa Nutt. var. angustata T.& G.
Sources: Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Cté de Lambton
CONDITIONS: Rare au Canada.

Solidago uliginosa var. jejunifolia = S. jejunifolia

Solidago ulmifolia Nutt.
Sources: Kershaw 1976
REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Sparganium androcladum (Engelm.)Morong
Sources: CAN, Kershaw 1976 et carte
REPARTITION: soOnt-NE
CARTE: Beal 1960
CONDITIONS: Rare au Canada. Menacée dans la Pennsyl-
vanie (Wherry 1975). Rare dans le Michigan et |’India-
na (Wagner 1976, Barnes 1975).

Sparganium multipedunculatum (Morong)Rydb.
Sources: FON 1969, Krotkov 1940 et carte
REPARTITION: Aka-TNO, CB-scOnt-TN (Boivin 1967)
ONTARIO: Pén. Bruce
CARTE: Hultén 1964

Specularia perfoliata (L.)A.DC.
SOURCES: Reznicek 1975-76
REPARTITION: CB, sOnt-sQ (Boivin 1967)

Sphenopholis nitida (Biehler)Scribn.
SOURCES: Kershaw 1976 et cartes
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Hamilton et Niagara Falls
CARTE: Dore & McNeill 1976 Ont, Erdman 1965
CONDITIONS: Rare au Canada.

Sphenopholis obtusata (Michx.)Scribn.
Sources: Dore & McNeill 1976 et carte
REPARTITION: CB-Ont (Boivin 1967)
CARTE: Erdman 1965

Spiranthes lacera Raf. var. gracilis (Bigel.)Luer

Sources: Catling 1976b et carte

REPARTITION: sOnt

CARTE: Luer 1975

CONDITIONS: Extrêmement rare dans l'ouest de l'Etat de
New York (Clinton Herbarium 1974).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans l'Etat de New
York (McGaugh & Genoways 1976 et le Vermont (Ver-
mont 1957, 1974).

Spiranthes lucida (H.H.Eat.)Ames

SOURCES: Beschel et al. 1970, Cruise 1969, FON 1969,
IBP-CT 1974 et cartes

REPARTITION: SOnt-NE

CARTE: Case 1964 Grands Lacs, Catling & McKay 1973
Ont, Luer 1975

CONDITIONS: Rare dans le Michigan (Wagner 1976).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d'expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans le Wisconsin,
l'Etat de New York (McGaugh & Genoways 1976) et le
Vermont (Vermont 1957, 1974).

Spiranthes magnicamporum Sheviak

SOURCES: Cartes

REPARTITION: soOnt

CARTE: Catling 1976a, Luer 1975

CONDITIONS: Rare au Canada.

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d'expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans le Minnesota
et le Wisconsin (McGaugh & Genoways 1976).

Spiranthes ochroleuca Rydb.

SOURCES: Catling 1976b et carte

REPARTITION: S&eOnt-Q, NE-TN

CARTE: Luer 1975

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d’expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans l'Etat de New
York (McGaugh & Genoways 1976 et le Vermont (Ver-
mont 1957, 1974).

Sporobolus asper (Michx.)Kunth
Sources: Dore & McNeill 1976, Dore 1975, Kershaw
1976
REPARTITION: Ont-NB (Boivin 1967)
CARTE: Hitchcock & Chase 1950 E-U
CONDITIONS: Rare au Canada.

Sporobolus heterolepis Gray

Sources: Beschel et al. 1970, Dore 1959, FON 1969,
Krotkov 1940 et carte

REPARTITION: Sask-Ont-soQ (Boivin 1967)

ONTARIO: Baie Georgienne a eOnt, localisé

CARTE: Dore & McNeill 1976 Ont

CONDITIONS: Rare au Canada. Menacée dans le Michigan
et la Pennsylvanie (Wagner 1976, Wherry 1975). Rare
dans |’Indiana (Barnes 1975).

Sporobolus vaginiflorus (Torr.)A.Wood var. ozarkanus
(Fern.)Shinners
SOURCES: Carte
REPARTITION: seOnt
ONTARIO: Lac Ontario
CARTE: Dore & McNeill 1976 Ont
CONDITIONS: Rare au Canada.

ee eee eee eee

Sporobolus vaginiflorus (Torr.)A.Wood var. vaginiflorus
SOURCES: Carte
REPARTITION: SOnt-NE (Boivin 1967)
ONTARIO: Cté de Gray et cté de Carleton
CARTE: Dore & McNeill 1976 Ont

Strophostyles helvola (L.)EIl.
SOURCES: Kershaw 1976, Stewart & James 1969 et carte
REPARTITION: SOnt-soQ (Boivin 1967)
CARTE: Soper 1960 Ont
CONDITIONS: Rare au Canada. Rare dans le Michigan
(Wagner 1976).

Stylophorum diphyllum (Michx.)Nutt.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
ONTARIO: London et St-Marys
CARTE: Soper 1962 Ont
CONDITIONS: Rare au Canada; peut-être éliminée de
l'Ontario (Soper 1962).

Subularia aquatica L. ssp. americana Mulligan & Calder
Sources: Brunton 1974-75 et carte
REPARTITION: Aka-TNO, CB, Sask-Ont-Q, NE-Lab
ONTARIO: oOnt-Baie Georgienne
CARTE: Mulligan & Calder 1964
CONDITIONS: Rare dans le Minnesota (Morley 1972). Me-
nacée d’extinction dans le Michigan (Wagner 1976).

Swertia caroliniensis (Walt.)Ktze.
(Frasera caroliniensis Walt.)
SOURCES: Catling 1974, Kershaw 1976 et cartes
REPARTITION: soOnt (Boivin 1967)
CARTE: Gillett 1963, Soper 1962 Ont
CONDITIONS: Rare au Canada. Rare dans le Michigan
(Wagner 1976).

Tanacetum huronense Nutt.

(Chrysanthemum bipinnatum L. ssp. huronense
(Nutt.)Hult.)
SOURCES: Cartes

REPARTITION:
(Boivin 1967)

ONTARIO: Baies d'Hudson et de James et lac Supérieur

CARTE: Given & Soper 1976 Ont, Guire & Voss 1963
Grands Lacs, Hultén 1968, Hultén 1971

CONDITIONS: En voie de disparition dans le Wisconsin
(Read 1976). Menacée d'extinction dans le Michigan
(Wagner 1976).

Aka-TNO, Alta, Man-nOnt-Q, NB-TN

Tephrosia virginiana (L.)Pers.

SOURCES: Cruise 1969, IBP-CT 1974, Kershaw 1976 et
carte

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Cté de Norfolk

CARTE: Soper 1962 Ont, Wood 1949

CONDITIONS: Rare au Canada. Rare dans le Minnesota
(Morley 1972).

Thalictrum revolutum DC.
SOURCES: Cruise 1969, Kershaw 1976
REPARTITION: SOnt (Boivin 1967)
CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Wisconsin (Read 1976).

49

Thalictrum sparsiflorum Turcz.

SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
carte

REPARTITION: Aka-TNO, CB-neOnt (Boivin 1967)
ONTARIO: Baie de James
CARTE: Hultén 1968

Thalictrum thalictroides = Anemonella thalictroides

Thaspium barbinode (Michx.)Nutt.
SOURCES: Cruise 1969, Kershaw 1976
REPARTITION: soOnt (Boivin 1967)

CONDITIONS: Rare au Canada. Peut-être éliminée dans
le Wisconsin (Read 1976).

Thelypteris hexagonoptera = Phegopteris hexagonoptera

Tilia heterophylla Vent.
Sources: CAN, Kershaw 1976 et carte
REPARTITION: seOnt
ONTARIO: Ile Main Duck et cté de Leeds
CARTE: Jones 1939, Little 1971
CONDITIONS: Rare au Canada.

Tofieldia pusilla (Michx.)Pers.

SOURCES: Kershaw 1976, Kershaw & Morton 1976, Moir
1958 et cartes

REPARTITION: Aka-TNO, CB-Man, nOnt-Q, TN-Lab

ONTARIO: Baies d'Hudson et de James, disjoint lac
Supérieur

CARTE: Given & Soper 1976 Ont, Hultén 1964, Hultén
1968, Porsild 1964

Tradescantia ohioensis Raf.
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Rivière Détroit et lac Ste-Clair
CARTE: Anderson 1954, Soper 1960 Ont
CONDITIONS: Rare au Canada.

Trichostema dichotomum L.
Sources: Kershaw 1976, Montgomery & Morton 1973
REPARTITION: soOnt
ONTARIO: Cté Norfolk
CARTE: Lewis 1945

CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Michigan (Wagner 1976).

Triosteum angustifolium L.
Sources: Kershaw 1976 et carte
REPARTITION: soOnt
ONTARIO: Ile Pelée
CARTE: Duncan 1973
CONDITIONS: Rare au Canada.

50

Triphora trianthophora (Sw.)Rydb.

Sources: Catling & Whiting 1976, IBP-CT 1974, Ker-
shaw 1976, Lafontaine 1974, Pratt 1974, Zavitz &
Gaiser 1956 et cartes

REPARTITION: soOnt

ONTARIO: Leamington et Parc Prov. Rondeau

CARTE: Case 1964 Grands Lacs, Luer 1975, Soper 1962
Ont

CONDITIONS: Rare au Canada.; en voie de disparition en
Ontario (Catling & Whiting 1976) En voie de dispari-
tion dans le Wisconsin (Read 1976). Menacée d'ex-
tinction dans le Michigan (Wagner 1976). Extréme-
ment rare dans l'ouest de l'Etat de New York (Clinton
Herbarium 1974).

PROTECTION: Le commerce international de cette plante
fait l'objet d'un contrôle exigeant un permis d'expor-
tation (Canada 1973, 1975) ratifié par le Canada et
les Etats-Unis Protégée par la loi dans le Wisconsin,
l'Etat de New York (McGaugh & Genoways 1976) et le
Vermont (Vermont 1957, 1974).

Triplasis purpurea (Walt.)Chapman

SouRCES: Cruise 1969, Kershaw 1976, Stewart & James
1969 et cartes

REPARTITION: soOnt (Boivin 1967)

CARTE: Dore & McNeill 1976 Ont, Hitchcock & Chase
1950 E-U, Soper 1962 Ont

CONDITIONS: Menacée dans la Pennsylvanie (Wherry
1975). Rare dans le Minnesota, le Michigan et l'India-
na (Morley 1972, Wagner 1976, Barnes 1975).

Trisetum spicatum ssp. molle = T. triflorum ssp. molle

Trisetum spicatum var. pilosiglume = T. triflorum ssp.
molle

Trisetum spicatum (L.)Richter ssp. spicatum
SOURCES: Cartes
REPARTITION: Aka-TNO, CB-nOnt-Lab (Boivin 1967)
ONTARIO: Baies d'Hudson et de James
CARTE: Dore & McNeill 1976 Ont, Hultén 1964, Hultén
1968, Porsild 1964, Raup 1947

Trisetum triflorum (Bigel.)A.& D.Lôve ssp. molle

(Hult.)A.& D.Lôve
(T. spicatum (L.) Richter ssp. molle (Michx.)Hult., T.
spicatum var. pilosiglume Fern.)

Sources: Dore 1959 et cartes

REPARTITION: Aka-TNO, CB-nOnt-Q, NE, TN-Lab (Ro-
land & Smith 1963-69)

ONTARIO: Baies d’Hudson et de James, disjoint lac
Supérieur

CARTE: Dore & McNeill 1976 Ont, Hultén 1964, Soper &
Maycock 1963 Ont

Utricularia geminiscapa Benj.
Sources: CAN, Lafontaine & White 1974
REPARTITION: eOnt-TN (Boivin 1967)
ONTARIO: Dist. d’Ottawa
CARTE: Fernald 1933
CONDITIONS: Menacée d’extinction dans le Wisconsin
(Read 1976).

Uvularia perfoliata L.

SOURCES: Catling 1974, Cruise 1969, Kershaw 1976 et
carte

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Hamilton et région de Niagara

CARTE: Anderson & Whitaker 1934, Soper 1952 Ont,
Wilbur 1963

CONDITIONS: Rare au Canada. En voie de disparition
dans le New Hampshire (Hodgdon 1973). Extréme-
ment rare dans l'ouest de l'Etat de New York (Clinton
Herbarium 1974).

Vaccinium ovalifolium Sm.
SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
cartes
REPARTITION: Aka-Y, CB, ncOnt-Q, NE-Lab (Boivin 1967)
ONTARIO: Lac Supérieur
CARTE: Fernald 1925, Given & Soper 1976 Ont, Hultén
1968, Soper & Heimburger 1976 Ont

Vaccinium pallidum Ait.
(V. vacillans auct.)
SOURCES: Kershaw 1976 et cartes
REPARTITION: soOnt, oNE (Boivin 1967)
CARTE: Soper & Heimburger 1961 Ont, Soper & Heimbur-
ger 1976 Ont
CONDITIONS: Rare au Canada.

Vaccinium stamineum L.
SOURCES: Beschel et al. 1970, IBP-CT 1974, Kershaw
1976 et cartes
REPARTITION: sOnt (Boivin 1967)
CARTE: Soper & Heimburger 1961 Ont, Soper & Heimbur-
ger 1976 Ont
CONDITIONS: Rare au Canada.

Vaccinium vacillans = V. pallidum

Valeriana ciliata = V. edulis var. ciliata

Valeriana edulis Nutt. var. ciliata (T.& G.)Cronq.
(V. ciliata T.& G.)
SOURCES: Cartes
REPARTITION: soOnt (Boivin 1967)
CARTE: Meyer 1951, Soper 1960 Ont
CONDITIONS: Rare au Canada. Rare dans le Michigan et
l'Indiana (Wagner 1976, Barnes 1975).

Valeriana uliginosa T.& G.
SOURCES: Beschel et al. 1970
REPARTITION: Ont-NB (Boivin 1967)
CONDITIONS: En voie de disparition dans le Wisconsin
(Read 1976).

Valerianella chenopodifolia (Pursh)DC.

SOURCES: Kershaw 1976 et cartes

REPARTITION: soOnt (Boivin 1967)

ONTARIO: Cté d’Elgin et cté de Welland

CARTE: Soper 1962 Ont

CONDITIONS: Rare au Canada.; peut-étre éliminée de
l'Ontario (Soper 1962). Menacée d'extinction dans le
Michigan (Wagner 1976). Rare dans l'Indiana (Barnes
1975).

Valerianella intermedia Dyal
SOURCES: Kershaw 1976 et carte
REPARTITION: soOnt
ONTARIO: lle Pelée
CARTE: Duncan 1973
CONDITIONS: Rare au Canada. Eliminée dans l'Illinois
(Paulson & Schwegman 1976).

Valerianella umbilicata (Sulliv.) Wood
Sources: Kershaw 1976 et carte
REPARTITION: soOnt
ONTARIO: lle Pelée
CARTE: Duncan 1973
CONDITIONS: Rare au Canada. Eliminée dans l'Illinois
(Paulson & Schwegman 1976).

Verbena bracteata Lag.& Rodr.
SOURCES: Carte
REPARTITION: CB-sOnt (Boivin 1967)
CARTE: Moldenke 1962 E-U, Soper 1960 Ont

Vernonia altissima Nutt.
Sources: Cruise 1969, Kershaw 1976
REPARTITION: sOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Vernonia missurica Raf.
Sources: CAN, Kershaw 1976
REPARTITION: soOnt (Fernald 1950)
ONTARIO: Cté de Lambton et cté de Kent
CARTE: Faust 1972
CONDITIONS: Rare au Canada.

Veronicastrum virginicum (L.)Farw.
SOURCES: Beschel et al. 1970 et cartes
REPARTITION: SMan-Ont (Boivin 1967)
CARTE: Pennell 1935, Soper 1960 Ont
CONDITIONS: Extrêmement rare dans l'ouest de l'Etat de
New York (Clinton Herbarium 1974).

Viburnum dentatum L. var. lucidum Ait.
(V. recognitum Fern.)
Sources: Beschel et al. 1970, Cruise 1969, IBP-CT
1974, Kershaw 1976 et cartes
REPARTITION: SOnt, soNB (Boivin 1967)
CARTE: Soper & Heimburger 1961 Ont, Soper & Heimbur-
ger 1976 Ont

Viburnum recognitum = V. dentatum var. lucidum

Vicia caroliniana Walt.
SouRCES: Beschel et al. 1970, Kershaw 1976
REPARTITION: SOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

Viola epipsila Ledeb. ssp. repens (Turcz.) Becker
SOURCES: Kershaw 1976, Kershaw & Morton 1976 et
cartes
REPARTITION: Aka-TNO, CB-Man, ncOnt
ONTARIO: Lac Supérieur
CARTE: Given & Soper 1976 Ont, Hultén 1958, Hultén
1968

51

Viola novae-angliae House
SOURCES: CAN, Kershaw 1976
REPARTITION: SMan-noOnt-NB (Gleason 1952)
CARTE: Russell 1965 E-U
CONDITIONS: Rare au Canada. Peut-être éliminée dans
le Wisconsin (Read 1976). Menacée d'extinction dans
le Michigan (Wagner 1976).

Viola palmata L.
SOURCES: Kershaw 1976, Stewart & James 1969
REPARTITION: soOnt (Boivin 1967)
CARTE: Russell 1965 E-U
CONDITIONS: Rare au Canada. En voie de disparition
dans le New Hampshire (Hodgdon 1973). Menacée
d'extinction dans le Michigan (Wagner 1976).

Viola pedata L. var. lineariloba DC.
Sources: Catling 1974, Cruise 1969, IBP-CT 1974, Ker-
shaw 1976
REPARTITION: soOnt (Boivin 1967)
CONDITIONS: Rare au Canada.

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976, Zander 1976).

Viola rotundifolia Michx.
SOURCES: Kershaw 1976 et cartes
REPARTITION: soOnt-soQ (Boivin 1967)
ONTARIO: Région de Niagara
CARTE: Bouchard & Maycock 1970, Russell 1954
CONDITIONS: Rare au Canada.

Viola sagittata Ait.
Sources: Beschel et al. 1970, Cruise 1969, Kershaw
1976 et carte
REPARTITION: Ont-Q (Boivin 1967)
CARTE: Russell 1965 E-U, Russell & Risser 1960
CONDITIONS: Rare au Canada.

Viola striata Ait.
SOURCES: Kershaw 1976, Stewart & James 1969
REPARTITION: sOnt (Boivin 1967)
CARTE: Russell 1965 E-U
CONDITIONS: Rare au Canada. Eliminée dans le Wiscon-
sin (Read 1976).

Viola triloba Schwein.
SOURCES: Cruise 1969, OAC
REPARTITION: soOnt (Boivin 1967)
ONTARIO: Pointe Turkey
CARTE: Russell 1965 E-U
CONDITIONS: Rare au Canada.

Vitis aestivalis Michx.
Sources: Beschel et al. 1970, Cruise 1969, Kershaw
1976 et carte
REPARTITION: soOnt (Boivin 1967)
CARTE: Soper & Heimburger 1976 Ont
CONDITIONS: Rare au Canada.

52

Woodsia alpina (Bolton)S.F.Gray

SouRCESs: Britton 1976, Brunton 1974-75, Catling 1975,
Kershaw 1976, Kershaw & Morton 1976, Reznicek
1975-76 et cartes

REPARTITION: Aka-TNO, Alta-Ont-Lab (Boivin 1967)

CARTE: Given & Soper 1976 Ont, Hultén 1958, Hultén
1968, Porsild 1964, Soper & Maycock 1963 Ont

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Woodsia glabella R.Br.

Sources: Britton 1976, Brunton 1974-75, Reznicek
1975-76, Soper & Maycock 1963 et cartes

REPARTITION: Aka-TNO, CB-ncOnt-Lab (Boivin 1967)

ONTARIO: Lac Supérieur

CARTE: Hultén 1964, Hultén 1968, Porsild 1964

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Woodsia obtusa (Spreng.)Torr.

SOURCES: Britton 1976, Britton 1977, Brunton 1974-75,
Gillett 1975-76

REPARTITION: seOnt-soQ (Boivin 1967)

ONTARIO: Cté de Frontenac et cté de Leeds

CONDITIONS: Rare au Canada. Menacée d'extinction
dans le Michigan (Wagner 1976).

PROTECTION: Protégée par la loi dans l'Etat de New York
(McGaugh & Genoways 1976).

Woodsia oregana D.C.Eat.
SOURCES: Britton 1976, Brunton 1974-75, FON 1969,
Lafontaine & White 1974 et cartes
REPARTITION: CB-Sask, Ont-Q (Boivin 1967)
CARTE: Fernald 1925, Given & Soper 1976 Ont
CONDITIONS: En voie de disparition dans le Wisconsin
(Read 1976).

Woodsia scopulina D.C.Eat.

Sources: Britton 1976, Brunton 1974-75, IBP-CT 1974,
Kershaw 1976, Kershaw & Morton 1976, Reznicek
1972 et cartes

REPARTITION: Aka-TNO, CB-Alta, Ont

ONTARIO: Lac Supérieur et baie Georgienne

CARTE: Fernald 1925, Hultén 1968

Xyris caroliniana Walt.
(X. difformis Chapm.)
SOURCES: Catling et al. 1977, IBP-CT 1974, et carte
REPARTITION: Ont, NE (Boivin 1967)
CARTE: Kral 1966, Soper 1960 Ont
CONDITIONS: Rare dans I'Indiana (Barnes 1975).

Xyris difformis = X. caroliniana

Zannichellia palustris L.

SOURCES: Beschel et al. 1970 et cartes

REPARTITION: Aka, CB-Man, Ont-Q, NB-TN (Boivin
1967)

ONTARIO: Baie de James et eOnt

CARTE: Hultén 1964, Hultén 1968, Steyermark 1941

CONDITIONS: Rare dans I'Indiana (Barnes 1975). En voie
de disparition dans le Wisconsin et le New Hampshire
(Read 1976, Hodgdon 1973). Menacée d’extinction
dans le Michigan (Wagner 1976). Rare dans le Minne-
sota (Morley 1972).

53

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61

Annexe |
Rapports vérifiés

Amelanchier canadensis (L.) Medic.

Antennaria brainerdii Fern.

Aristida intermedia Scribn.& Ball

Asclepias longifolia Michx.

Baptisia leucantha T.& G.

Botrychium boreale (E. Fries)Milde

Bidens laevis (L.)BSP.

Braya purpurascens (R.Br.)Bunge

Cardamine rotundifolia Michx.

Carex alata T.& G.

Carex howei Mack.

Carex hyalinolepis Steud.

Carex retroflexa Muhl.

Carya tomentosa Nutt.

Ceratophyllum echinatum Gray

Cynoglossum virginianum L.

Cyperus ovularis (Michx.)Torr.

Cypripedium calceolus L. var. planipe-
talum (Fern.)Vict.& Rousseau

Cuscuta compacta Juss.
Dichromena colorata (L.)Hitchc.
Epilobium alpinum L.

Lindernia anagallidea (Michx.)Pennell
Luzula pallescens (Wahl.)Bess.
Lycopus rubellus Moench

Lycopus virginicus L.

Panicum commutatum Shultes
Pellaea densa (Brack.)Hook.
Penstemon calycosus Small
Polygonum cristatum Engelm.& Gray
Quercus coccinea Muenchh.
Ranunculus micranthus Nutt.
Senecio pseudaureus Rydb.

Silene stellata (L.)Ait.f.

Silphium trifoliatum L.

Utricularia biflora Lam.

Viola latiuscula Greene

Annexe II
Plantes probablement ou sûrement allogènes

Alnus glutinosa (L.)Gaertner

Amorpha fruticosa L. var. angustifolia
Pursh

Baptisia leucantha T.& G.

Dactylorhiza maculata (L.)So6

Delphinium brownii Rydb.

Eragrostis spectabilis (Pursh)Steud.

Helianthus hirsutus Raf.

Leptoloma cognatum (Schultes)Chase

Mirabilis nyctaginea (Michx.)MacM.

Oenothera laciniata Hill

Potentilla reptans L.

Pycnanthemum verticillatum
(Michx.)Pers.

Rudbeckia triloba L.

Salvia pratensis L.

Sedum hispanicum L.

Sedum telephioides Michx.

Sedum ternatum Michx.

Silphium laciniatum L.

Solanum caroliniense L.

Spartina patens (Ait. )Muhl.

Stipa avenacea L.

62

Annexe III

Liste des plantes vasculaires rares de l'Ontario dans l’ordre taxonomique

ISOETACEAE

Isoetes lacustris var. macrospora
|. macrospora

OPHIOGLOSSACEAE

B. lanceolatum var.
angustisegmentum

POLYPODIACEAE

Asplenium cryptolepis

A. platyneuron

A. ruta-muraria ssp. cryptolepis

A. viride

Athyrium pycnocarpon

Cryptogramma crispa var.
acrostichoides

Cystopteris fragilis var. laurentiana

C. montana

Dryopteris filix-mas

D. goldiana

Dryopteris hexagonoptera

Dryopteris robertiana

Gymnocarpium robertianum

Pellaea atropurpurea

Phegopteris hexagonoptera

Phyllitis scolopendrium var.
americana

Polystichum braunii var. purshii

P. lonchitis

Thelypteris hexagonoptera

Woodsia alpina

W. glabella

W. obtusa

W. oregana

W. scopulina

SALVINIACEAE
Azolla caroliniana

PINACEAE
Pinus rigida
SPARGANIACEAE

Sparganium androcladum
S. multipedunculatum

POTAMOGETONACEAE

Potamogeton bicupulatus

P. capillaceus

P. confervoides

P. hillii

P. oakesianus

P. perfoliatus var. perfoliatus
P. pulcher

P. vaseyi

Zannichellia palustris

NAJADACEAE
Najas gracillima
N. guadalupensis

ALISMATACEAE

Sagittaria engelmanniana var.
brevirostra
S. graminea var. cristata

HYDROCHARITACEAE
Elodea nuttallii

GRAMINEAE

Agropyron boreale ssp. boreale
A. dasystachyum var. psammophilum
A. latiglume

A. psammophilum
Alopecurus alpinus
Arctagrostis latifolia
Arctophila fulva
Aristida basiramea

A. dichotoma

A. longespica

A. necopina

A. purpurascens
Bouteloua curtipendula
Bromus pubescens

B. pumpellianus

B. purgans
Calamagrostis lacustris
C. purpurascens
Calamovilfa longifolia var. longifolia
C. longifolia var. magna
Catabrosa aquatica
Cenchrus longispinus
C. pauciflorus

Cinna arundinacea
Colpodium fulvum
Danthonia compressa
Danthonia sericea
Deschampsia cespitosa var. maritima
Dupontia fisheri
Echinochloa walteri
Elymus diversiglumis

E. glaucus

E. interruptus

E. mollis

E. riparius

E. villosus

Eragrostis hypnoides
Festuca baffinensis

. brachyphylla

. occidentalis

. rubra var. altaica

. rubra var. arenaria

. rubra var. juncea

. rubra var. rubra

. scabrella

Glyceria melicaria
Hierochloe pauciflora
Koeleria cristata

K. gracilis

K. macrantha

K. pyramidata

on en M on om) st) sm

Melica smithii

Muhlenbergia racemosa

M. schreberi

M. sylvatica

M. tenuiflora

Panicum agrostoides

. bicknellii

. calliphyllum

. clandestinum

columbianum var. commonsianum
commonsianum
depauperatum
depauperatum var. perlongum
dichotomum

. gattingeri

. lanuginosum var. praecocius
. latifolium var. clandestinum
. leibergii var. leibergii

. leibergii var. baldwinii

. oligosanthes

. perlongum

. philadelphicum

. praecocius

. rigidulum

. Sphaerocarpon

. spretum

. Subvillosum

Paspalum ciliatifolium

Phleum alpinum

P. commutatum

Poa alpigena

P. arctica

P. canbyi

P. interior

P. nemoralis var. interior

P. pratensis var. alpigena
Puccinellia lucida

P. nuttalliana

Sphenopholis nitida

S. obtusata

Sporobolus asper

S. heterolepis

S. vaginiflorus var. ozarkanus
S. vaginiflorus var. vaginiflorus
Triplasis purpurea

Trisetum spicatum ssp. molle
Trisetum spicatum var. pilosiglume
T. spicatum var. spicatum

T. triflorum ssp. molle

CYPERACEAE

Bulbostylis capillaris
Carex amblyorhyncha

C. amphibola var. turgida
. atrata

. atrofusca

. Careyana

. conoidea

davisii

. folliculata

ele pie relie)

. formosa

. frankii

. gravida

grisea

haydenii

. heleonastes

. hirsutella

. hookerana

jamesii
katahdinensis

. laevivaginata

. laxiculmis

. laxiflora var. gracillima
. leavenworthii

. lupuliformis

miliaris
muskingumensis
nigra

. novae-angliae

. oligocarpa

prasina

. richardsonii

rossii

saxatilis var. miliaris
schweinitzii

. shortiana

squarrosa

. supina ssp. spaniocarpa
swanii

tetanica var. woodii
torta

. trichocarpa

. typhina

. virescens

. Willdenowii

. Woodii

Cyperus engelmannii
C. erythrorhizos

C. ferruginescens

C. houghtonii
Eleocharis equisetoides
. geniculata

. intermedia

. olivacea

. parvula

. quadrangulata var. crassior
. rostellata
Fimbrystilis autumnalis
F. drummondii

F. spadicea
Hemicarpha micrantha
Kobresia simplisiuscula
Rhynchospora capitellata
Scirpus clintonii

. heterochaetus

. Maritimus var. paludosus
. micranthus

. paludosus

. smithii

. torreyi

. verecundus

Scleria triglomerata

S. verticillata

oer eee II ODD DMN NDNNDNMNNNNN|NNNO

mmmmmm

ANNNDHANWM

ARACEAE

Arisaema dracontium
Peltandra virginica

XYRIDACEAE

Xyris caroliniana
X. difformis

COMMELINACEAE
Tradescantia ohioensis

JUNCACEAE

Juncus acuminatus
. biflorus

. brachycarpus

. ensifolius

. greenel Var. vaseyi
. longistylis

. Marginatus

. militaris

. Secundus

. Subtilis

. vaseyl

a... Ce ce ee Coe, CC

LILIACEAE

Aletris farinosa
Allium cernuum

A. stellatum
Camassia scilloides
Chamaelirium luteum
Disporum lanuginosum
D. trachycarpum
Erythronium albidum
Polygonatum biflorum
P. canaliculatum
Smilax ecirrhata

S. illinoensis

S. lasioneura

S. rotundifolia
Tofieldia pusilla
Uvularia perfoliata

DIOSCOREACEAE
Dioscorea villosa

AMARYLLIDACEAE
Hypoxis hirsuta

IRIDACEAE

Iris brevicaulis
|. lacustris
Sisyrinchium albidum

ORCHIDACEAE

Aplectrum hyemale
Corallorhiza odontorhiza
Cypripedium arietinum
C. candidum

C. passerinum
Goodyera oblongifolia
Habenaria blephariglottis
H. ciliaris

H. flava var. herbiola

H. leucophaea

H. unalascensis

Isotria verticillata

63

Listera australis

L. borealis

Malaxis paludosa

Piperia unalascensis
Platanthera blephariglottis
Platanthera ciliaris
Platanthera flava var. herbiola
Platanthera leucophaea
Spiranthes lacera var. gracilis
S. lucida

S. magnicamporum

S. ochroleuca

Triphora trianthophora

SALICACEAE

Salix arctica

. arctophila

. brachycarpa var. brachycarpa
. calcicola

. lanata ssp. calcicola
maccalliana

. reticulata

. sericea

. vestita

MYRICACEAE
Myrica pensylvanica
JUGLANDACEAE
Carya glabra
C. laciniosa
Juglans nigra
BETULACEAE

Betula lenta

FAGACEAE

Castanea dentata
Quercus bicolor
Q. ellipsoidalis

Q. muehlenbergii
Q. palustris

Q. prinoides

Q. prinus

ULMACEAE
Celtis tenuifolia

MORACEAE
Morus rubra

POLYGONACEAE

Koenigia islandica
Polygonella articulata
Polygonum careyi

P. ramosissimum

P. tenue

CHENOPODIACEAE

Chenopodium foggii
Corispermum hyssopifolium
Salicornia europaea

PORTULACACEAE
Montia fontana

64

CARYOPHYLLACEAE

Arenaria humifusa

A. macrophylla

A. rubella

Cerastium alpinum

C. beeringianum

Melandrium apetalum ssp. arcticum
Minuartia rubella

Paronychia canadensis

Sagina procumbens

Silene virginica

NYMPHAEACEAE

Nelumbo lutea
Nuphar advena
N. luteum ssp. macrophyllum

RANUNCULACEAE

Anemonella thalictroides
Caltha natans
Cimicifuga racemosa
Hydrastis canadensis
Isopyrum biternatum
Myosorus minimus
Ranunculus fascicularis
R. hispidus var. marilandicus
R. pallasii

R. pedatifidus

R. rhomboideus
Thalictrum revolutum

T. sparsiflorum

T. thalictroides

BERBERIDACEAE
Jeffersonia diphylla
MAGNOLIACEAE
Liriodendron tulipifera
Magnolia acuminata
ANNONACEAE
Asimina triloba

PAPAVERACEAE
Stylophorum diphyllum

FUMARIACEAE
Corydalis flavula

CAPPARIDACEAE

Polanisia graveolens
P. dodecandra

CRUCIFERAE

Arabis alpina

A. arenicola var. pubescens
A. canadensis

A. drummondii

A. holboellii

A. lyrata var. lyrata

A. perstellata var. shortii
Cardamine douglasii
Draba alpina

D. aurea

D. cana

D. cinerea
D. glabella
D. hirta
D. incana
D. lanceolata

D. nivalis

D. reptans

Subularia aquatica ssp. americana

DROSERACEAE
Drosera linearis

PODOSTEMACEAE
Podostemum ceratophyllum

SAXIFRAGACEAE

Heuchera americana
Parnassia kotzebuei
Saxifraga aizoides

S. caespitosa

S. cernua

S. pensylvanica

ROSACEAE

Agrimonia parviflora
A. pubescens
Amelanchier amabilis
A. sanguinea var. grandiflora
Crataegus douglasii
Dryas drummondii
D. integrifolia

Geum laciniatum

G. triflorum

G. vernum

G. virginianum
Gillenia trifoliata
Potentilla gracilis

P. hippiana

P. paradoxa

P. pensylvanica

P. pulchella

P. rivalis

Prunus americana
Rosa setigera

LEGUMINOSAE

Amorpha canescens
Astragalus adsurgens var. robustior
A. agrestis

A. americanus

A. eucosmus

A. neglectus

Baptisia tinctoria
Cassia hebecarpa

C. marilandica

Cercis canadensis
Desmodium canescens
D. ciliare

D. cuspidatum

D. illinoensis

D. marilandicum

D. rotundifolium

D. sessilifolium
Gleditsia triancanthos
Glycyrrhiza lepidota

Gymnocladus dioica
Hedysarum mackenzii
Lespedeza intermedia
L. violacea

L. virginica

Lupinus perennis

Oxytropis campestris var. johannensis

. deflexa var. foliolosa

. foliolosa

. hudsonica

ixodes

. johannensis

. splendens

. viscida var. hudsonica
. viscida var. viscida
Petalostemum candidum
P. purpureum
Strophostyles helvola
Tephrosia virginiana
Vicia caroliniana

LINACEAE
Linum lepagei
L. lewisii ssp. lepagei
. medium var. texanum
. perenne ssp. lepagei
. Striatum
. Sulcatum
. Virginianum
RUTACEAE

Ptelea trifoliata

POLYGALACEAE
Polygala incarnata

EUPHORBIACEAE
Euphorbia commutata
E. corollata
E. obtusata
E. polygonifolia
LIMNANTHACEAE
Floerkea proserpinacoides
ANACARDIACEAE
Rhus copallina
CELASTRACEAE
Euonymus atropurpureus

VITACEAE
Vitis aestivalis
TILIACEAE
Tilia heterophylla
MALVACEAE

Hibiscus moscheutos var.
purpurascens
H. palustris

HYPERICACEAE
Hypericum gentianoides
H. prolificum
H. spathulatum

00000000

AMEN

ELATINACEAE
Elatine minima

CISTACEAE

Helianthemum bicknellii

Lechea leggettii var. moniliformis
L. minor

L. stricta

VIOLACEAE

Hybanthus concolor
Viola epipsila ssp. repens
. novae-angliae

. palmata

. pedata var. lineariloba
. rotundifolia

. sagittata

. Striata

. triloba

Ca

CACTACEAE

Opuntia compressa
O. fragilis
O. humifusa

LYTHRACEAE

Ammania coccinea
Lythrum alatum

NYSSACEAE
Nyssa sylvatica
MELASTOMATACEAE
Rhexia virginica
ONAGRACEAE

Epilobium leptocarpum var. macounii
E. paniculatum var. subulatum
Gaura biennis

Ludwigia polycarpa

Oenothera nuttallii

O. pilosella

HALORAGIDACEAE
Myriophyllum farwellii
M. humile
ARALIACEAE

Echinopanax horridum
Oplopanax horridus
Panax quinquefolius

UMBELLIFERAE

Berula erecta var. incisa
Chaerophyllum procumbens
Erigenia bulbosa
Osmorhiza chilensis

O. obtusa

Oxypolis rigidior

Sanicula canadensis
Thaspium barbinode

CORNACEAE
Cornus drummondii
C. florida

ERICACEAE

Andromeda polifolia ssp. polifolia

Arctostaphylos alpina

A. rubra

Chimaphila maculata
Ledum palustre var. decumbens
Pterospora andromedea
Pyrola grandiflora
Rhododendron lapponicum
Vaccinium ovalifolium

V. pallidum

V. stamineum

V. vacillans

PRIMULACEAE

Armeria maritima ssp. labradorica
Glaux maritima var. obtusifolia
Primula intercedens

OLEACEAE
Fraxinus quadrangulata

GENTIANACEAE

Bartonia paniculata ssp. paniculata
B. virginica

Frasera caroliniensis

Gentiana alba

. detonsa var. nesophila

. detonsa var. raupii

. flavida

. nesophila

. puberula

. puberulenta

. quinquefolia

. raupii

Gentianella detonsa ssp. nesophila
Gentianella detonsa ssp. raupii
Gentianella quinquefolia

Sabatia angularis

Swertia caroliniensis

ASCLEPIADACEAE

Asclepias exaltata
. hirtella

. lanuginosa

. nuttalliana

. ovalifolia

. purpurascens

. quadrifolia

. Sullivantii

. verticillata

. Viridiflora

CONVOLVULACEAE
Ipomoea pandurata
POLEMONIACEAE

Collomia linearis
Phlox pilosa
P. subulata

HYDROPHYLLACEAE

Hydrophyllum appendiculatum
H. canadense
Phacelia franklinii

BORAGINACEAE
Lithospermum incisum

DDHDOOONG

rrrrrrrr>,y

L. latifolium

Mertensia maritima

M. virginica

Myosotis macrosperma

M. verna

Onosmodium molle var.
hispidissimum

VERBENACEAE

Lippia lanceolata var. recognita
Phyla lanceolata var. recognita
Verbena bracteata

LABIATAE

Agastache nepetoides

A. scrophulariaefolia
Blephilia ciliata

B. hirsuta

Collinsonia canadensis
Monarda didyma
Pycnanthemum incanum
P. pilosum

P. tenuifolium

Satureja arkansana

S. glabella var. angustifolia
Scutellaria nervosa var. calvifolia
Trichostema dichotomum

SCROPHULARIACEAE

Agalinis flava

A. gattingeri

A. skinneriana

A. tenuifolia var. parviflora
Aureolaria flava

A. pedicularia

A. virginica

Bartsia alpina

Buchnera americana
Castilleja raupil

Collinsia parviflora

C. verna

Conobea multifida
Euphrasia frigida

E. vinacea

Gerardia gattingeri

G. skinneriana

G. tenuifolia var. parviflora
Limosella aquatica
Mimulus alatus

M. glabratus

M. moschatus

Pedicularis flammea

P. lanceolata

P. lapponica

P. sudetica ssp. interioides
Penstemon gracilis
Rhinanthus borealis
Veronicastrum virginicum

BIGNONIACEAE
Campsis radicans
OROBANCHACEAE

Conopholis americana
Orobanche fasciculata

65

66

LENTIBULARIACEAE
Utricularia geminiscapa
ACANTHACEAE
Justicia americana
PLANTAGINACEAE
Littorella americana
Plantago cordata
P. maritima
RUBIACEAE

Galium kamtschaticum

G. pilosum

Houstonia caerulea
CAPRIFOLIACEAE

Triosteum angustifolium
Viburnum dentatum var. lucidum
V. recognitum

ADOXACEAE

Adoxa moschatellina

VALERIANACEAE

Valeriana ciliata

V. edulis var. ciliata

V. uliginosa

Valerianella chenopodifolia

V. intermedia

V. umbilicata
CAMPANULACEAE

Campanula americana
LOBELIACEAE

Specularia perfoliata
COMPOSITAE

Actinomeris alternifolia
Adenocaulon bicolor

Actinea acaulis var. glabra

A. herbacea

Antennaria farwellii

A. rupicola

A. subviscosa

Arnica alpina ssp. angustifolia
A. chionopappa

A. lonchophylla ssp. chionopappa
A. lonchophylla ssp. lonchophylla
A. whitneyi

Artemisia tilesii ssp. elatior
Aster acuminatus

. divaricatus

. dumosus

. lowrieanus

. lutescens

. ontarionis

. pilosus var. demotus

. prenanthoides

. ptarmicoides var. lutescens
sericeus

. shortii

. Subulatus

. tradescantii var. thyrsoides
. undulatus

. vimineus

Bidens coronata

B. discoidea

Cacalia tuberosa
Chrysanthemum arcticum

C. bipinnatum ssp. huronense
Cirsium drummondii

C. pitcheri

C. pumilum ssp. hillii
Coreopsis lanceolata

C. tripteris

Eupatorium altissimum

E. coelestinum

E. purpureum

Prrrrrrrrrrrr,r

Gnaphalium purpureum var.
purpureum

Hieracium gronovii

H. longipilum

H. paniculatum

H. venosum var. nudicaule

Hymenoxys acaulis var. glabra

Krigia biflora

K. virginica

Lactuca floridana

Liatris aspera var. intermedia

L. spicata

Mikania scandens

Polymnia canadensis

Ratibida columnifera

R. pinnata

Senecio glabellus

S. obovatus

Silphium perfoliatum

S. terebinthinaceum

Solidago arguta

. houghtonii

. jejunifolia

. missouriensis

. ohioensis

patula

. puberula

. riddellii

. rigida var. rigida

. sciaphila

. speciosa var. angustata

. uliginosa var. jejunifolia

. ulmifolia

Tanacetum huronense

Vernonia altissima

V. missurica

RECENTS TITRES DES SYLLOGEUS

No.

No.

4

10

11

12

13

Faber, Ed., Daniel J. (1974)

A HIGH SCHOOL FIELD AND LABORATORY STUDY OF LAC LAPECHE IN GATINEAU PARK, QUEBEC,
DURING MARCH, 1972

Gorham, Stanley W., and Don E. McAllister (1974)

THE SHORTNOSE STURGEON, Acipenser brevirostrum, IN THE SAINT JOHN RIVER, NEW-
BRUNSWICK, CANADA, A RARE AND POSSIBLY ENDANGERED SPECIES

Vladykov, Vadim D., and Herratt March (1975)

DISTRIBUTION OF LEPTOCEPHALI OF THE TWO SPECIES OF Anguilla IN THE WESTERN NORTH
ATLANTIC, BASED ON COLLECTIONS MADE BETWEEN 1933 AND 1968

Legendre, Vianney, J.G. Hunter, and Don E. McAllister (1975)

NOMS FRANCAIS, ANGLAIS ET SCIENTIFIQUES DES POISSONS MARINS DE L'ARCTIQUE
CANADIEN

McAllister, Don E. (1975)
FISH COLLECTIONS FROM THE OTISH MOUNTAIN REGION, CENTRAL QUEBEC, CANADA

Tynen, Michael J. (1975)

A CHECKLIST AND BIBLIOGRAPHY OF THE NORTH AMERICAN ENCHYTRAEIDAE (ANNELIDA:
OLIGOCHAETA)

Jarzen, David (1976)

PALYNOLOGICAL RESEARCH AT THE NATIONAL MUSEUM OF NATURAL SCIENCES, OTTAWA
“TODAY AND TOMORROW”

Chengalath, R. (1977)
A LIST OF ROTIFERA RECORDED FROM CANADA WITH SYNONYMS

The KTEC Group (1977)

CRETACEOUS — TERTIARY EXTINCTIONS AND POSSIBLE TERRESTRIAL AND EXTRATERRES-
TRIAL CAUSES

Jarzen, David M. (1977)
THE POLLEN AND SPORE REFERENCE COLLECTION AT THE NATIONAL MUSEUMS OF CANADA.

Ocsb vOoOOl ES8l

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A¥VHEM SION3IOS 40 OVOV 411VI