Full text of "Syllogeus"

See other formats

SYLLOGEUS i

NATIONAL MUSEUM OF NATURAL SCIENCES MUSEE NATIONAL DES SCIENCES NATURELLES

SSE 555505550055

LY ANT ETS

SESS 555505555 No. 23

William J. Cody

VASCULAR PLANTS OF RESTRICTED RANGE
IN THE CONTINENTAL NORTHWEST TERRITORIES,

CANADA
el:
n=
MUSEES NATIONAUX DU CANADA OTTAWA NATIONAL MUSEUMS OF CANADA

SYLLOGEUS is a publication of the National Museum of Natural Sciences, National Museums of
Canada, designed to permit the rapid dissemination of information pertaining to those
disciplines and educational functions for which the National Museum of Natural Sciences is
responsible. In the interests of making information available quickly, normal publishing
procedures have been abbreviated.

Articles are published in English, in French, or in both languages, and the issues appear at
irregular intervals. Copies are available by mail from the National Museum of Natural
Sciences, Ottawa, Canada K1A OM8.

La collection SYLLOGEUS, publiée par le Musée national des sciences naturelles, Musées
nationaux du Canada, a pour but de diffuser rapidement le résultat des travaux dans les
domaines scientifique et éducatif qui sont sous la direction du Musée national des sciences
naturelles. Pour assurer la prompte distribution de cette publication, on a abrégé les
étapes de la rédaction.

Les articles sont publiés en francais, en anglais ou dans les deux langues, et ils paraissent
irréguliérement. On peut les obtenir par commande postale au Musée national des sciences
naturelles, Ottawa, Canada K1A OM8

Syllogeus series No. 23 Série Syllogeus N° 23
(c) National Museums of Canada 1979 (c) Musées nationaux du Canada 1979
Printed in Canada Imprimé au Canada

ISSN 0704-576X

VASCULAR PLANTS OF RESTRICTED RANGE
IN THE CONTINENTAL NORTHWEST TERRITORIES, CANADA

WILLIAM J. CODY
Biosystematics Research Institute
Canada Department of Agriculture

Ottawa, Ontario

KIA OC6

Syllogeus No. 23

National Museum of Natural Sciences Musée national des sciences naturelles
National Museums of Canada Musées nationaux du Canada
Ottawa 1979

Abstract

The distribution patterns of 530 species which have restricted distributions within the
Continental Northwest Territories are briefly described: about 17.1% are circumpolar, 4% are
amphi-Atlantic, 19.2% are amphi-Beringian, 31.1% are more or less broad-ranging North
American, and 16.7% are endemic to various parts of boreal and arctic North America. Selected

bibliographic references are given to substantiate these ranges.

Résumé
On décrit brièvement la distribution de 530 espèces à distribution restreinte à
l'intérieur de la portion continentale des Territoires du Nord-ouest: 17.1% de ces espèces
sont circumpolaires, 4% amphi-Atlantiques et 19.2% amphi-Béringiennes; 31.1% de ces espèces
se sont répandues plus ou moins largement dans l'Amérique du Nord et 16.7% sont endémiques
dans certains régions boréales au arctiques de l'Amérique du Nord. On a fourni un choix de

références bibliographiques pour justifier les distributions citées.

INTRODUCTION

A Flora of the Continental Northwest Territories (Figure 1) has been in preparation by
A. Erling Porsild and William J. Cody for several years. This work is now completed and is

in the process of publication.

TUKTOYAKTUK

i
AKLAVIK
1 INUVIK

C Fort
~_ MePHERSON
~

BAKER
LAKE

CHESTERFIELD’
INLET
DISTRICT OF
KEEWATIN

ESKIMO
POINT.

BRITISH COLUMBIA ALBERTA MANITOBA

Figure 1 - Map of the continental portion of the Northwest Territories.

Cody (1971) has described the distribution patterns of the native vascular plant species
in the Continental Northwest Territories flora. These are: circumpolar (31%), amphi-Atlantic
(2.2%), amphi-Beringian (15%), Cordilleran (6.2%), more or less broad-ranging North American
(27.6%) and endemic to various parts of boreal and arctic North America (11.2%). An
examination of the ranges of these species within the Continental Northwest Territories has
shown that 530, over one third, have restricted ranges in this area. Of these species with
restricted ranges, about 17.1% are circumpolar, 4.0% are amphi-Atlantic, 19.2 % are
amphi-Beringian, 11.4% are Cordilleran, 31.5% are more or less broad-ranging North American,

and 16.7% are endemic to various parts of boreal and arctic North America.

Because of current interest in rare and endangered species it has been deemed useful to
bring information on these species with restricted distributions together, separate from the
flora. Future collecting will, however, inevitably reveal new sites and range extensions to
our present knowledge, which may of course change the picture. Bibliographic references are
given throughout the text so that the reader may seek some further confirmation of the ranges

in the form of cited specimens, if desired, but these are not exhaustive.

ANNOTATED LIST OF SPECIES
OPHIOGLOSSACEAE

Botrychium boreale Milde ssp. boreale (Rupr.) Clausen---known in the territory from a single
collection by J.A. Calder from Horne Lake in the Richardson Mountains, a site which is
disjunct by about 650 km from the nearest locality along the Canol Road in the Yukon
Territory (Cody and Porsild 1968).

Botrychium lunaria (L.) Sw. ssp.lunaria--rare and local in western District of Mackenzie in

meadows and usually open grassy situations.

Botrychium lunaria (L.) Sw. ssp. minganense (Vict.) Calder & Taylor--in similar situations
but less frequent than ssp. lunaria (Scotter and Cody 1974).

Botrychium multifidum (Gmel.) Rupr.--rare and local in prairie-like clearings and thus far
known only from two localities: Fort Simpson (Raup 1947) and Fort Smith (Cody 1956).

Botrychium virginianum (L.) Sw. ssp. europaeum (Angstr.) Clausen--rare and local in rich
woodland in southwestern District of Mackenzie (Cody 1963, Raup 1947, Scotter and Cody
1974).

POLYPODIACEAE

Asplenium viride Huds.--rare on moist rocky mountain slopes in the Nahanni Range of the
Mackenzie Mountains where it is known from only two widely separated sites (Cody 1963,

Porsild 1945, Raup 1947).

Athyrium filix-femina (L.) Roth ssp. cyclosorum (Rupr.) C. Chr.--rare; adjacent to hot
springs in the southern Mackenzie Mountains, and in the Liard River valley near Fort Liard

(Jeffrey 1961, Porsild 1961, Scotter and Cody 1974).

Cryptogramma crispa (L.) R. Br. var. sitchensis (Rupr.) C. Chr.--rare on calcareous rocks in
the Mackenzie Mountains (Raup 1947, Scotter and Cody 1974).

Cryptogramma stelleri (Gmel.) Prantl--rare on moist shale slopes, Richardson and Mackenzie
Mountains (Cody and Porsild 1968, Cody 1978).

Cystopteris montana (Lam.) Bernh.--rare and local, mainly growing in damp calcareous places:
at Summit Lake in the Richardson Mountains (Cody 1978), along the Liard River on Nahanni
Mountain (Raup 1947) and near Kakisa Lake at the west end of Great Slave Lake (Thieret
1963).

Dryopteris dilatata (Hoffm.) Gray s.l.--rare in the southwestern Mackenzie Mountains where it
has been found beside hot springs (Scotter and Cody 1974, Cody and Porsild 1968).

Dryopteris disjuncta (Ledeb.) Morton (Gymnocarpium dryopteris (L.) Newm.)--rare in rich,
mainly deciduous woods in the southern Mackenzie Mountains and about Great Slave Lake.

Dryopteris phegopteris (L.) C. Chr. (Thelypteris phegopteris (L.) Slosson--in our area thus
far known only from beside a hot spring in the southwestern Mackenzie Mountains (Scotter and

Cody 1974, Cody and Porsild 1968).

Dryopteris robertiana (Hoffm.) C. Chr. (Gymnocarpium robertianum (Hoffm.) Newm.)--rare in the
southern Mackenzie Mountains and southwest Mackenzie lowlands where it is restricted to

shaded calcareous ledges.

Dryopteris spinulosa (0.F. Mill.) Watt--within our area known only from rich woods north of
the height of land between Great Bear and Great Slave lakes (Raup 1947) and by a hot spring

in the southern Mackenzie Mountains (Cody et al. in press).

Matteuccia struthiopteris (L.) Todaro var. pensylvanica (Willd.) Morton (Pteretis nodulosa
(Michx.) Nieuwl.)--rare in alluvial situations along the Liard River as far downstream as
Nahanni Butte (Cody 1963, Jeffery 1961) and in similar situations and about some hot springs

in southern Nahanni National Park (Scotter and Cody 1974).

Pellaea glabella Mett. ex Kuhn var. nana (Richards.) Cody--crevices of sunny limestone rock
faces, Franklin Mountains (Raup 1947) and southeastern Mackenzie Mountains (Cody 1963).

Woodsia alpina (Bolton) S.F. Gray--apparently restricted to the extreme northwest of District

of Mackenzie, adjacent to Coronation Gulf and central District of Keewatin.
SELAG INELLACEAE
Selaginella sibirica (Milde) Hieron.--steep exposed stony and sandy slopes, Richardson

Mountains, Richards Island in the Mackenzie River Delta and the Caribou Hills along the East
Branch of the Delta (Porsild 1943).

ISOETACEAE

Isoetes muricata Dur. var. braunii (Dur.) Reed--apparently rare and local although perhaps
overlooked in shallow water on the sandy bottom of lakes, McTavish Arm, Great Bear Lake

(Porsild 1943) and on the north east side of Great Slave Lake (Cody 1956).
PINACEAE

Abies lasiocarpa (Hook.) Nutt.--restricted to sub-alpine situations in the southwestern
Mackenzie Mountains (Raup 1947, Jeffrey 1961).

Pinus contorta Loud. var. latifolia Engelm.--on the Liard Range facing the Liard River this
species sometimes forms pure stands, but it is restricted to the southwest parts of the
Mackenzie Mountains (Jeffrey 1961). Near Nahanni Butte P. contorta var. latifolia hybridizes
with P. banksiana (Cody 1963, Scotter and Cody 1974).

SPARGANTACEAE

Sparganium eurycarpum Engelm.--thus far known from a single collection from Fort Norman
(Porsild 1943), disjunct from other known sites just south of the Mackenzie border in
Alberta.

POTAMOGETONACEAE

Potamogeton foliosus Raf. var. macellus Fern.--rare or perhaps overlooked in shallow still
waters, Yellowknife (Cody 1956), Nahanni National Park (Cody et al, in press).

Potamogeton illinoensis Morong--known in the Territory from a single collection at Mills
Lake, an expansion of the Mackenzie River below Fort Providence (Cody and Porsild 1967).
This station is disjunct from a site in southern British Columbia at Sumas Lake by 1290 km
and the Souris River in Manitoba by 1770 km.

Potamogeton natans L.--thus far known only from Rabbit-kettle Lake in Nahanni National Park
(Cody and Porsild 1968, Scotter and Cody 1974).

Potamogeton pectinatus L.--thus far known from only a few stations along the Mackenzie River
drainage north to the delta. (Cody 1965, Porsild 1943, Raup 1947).

Potamogeton porsildiorum Fern.--apparently rare, northwestern District of Mackenzie and about

the north arm of Great Slave Lake.

Potamogeton robbinsii Oakes--in Mackenzie District known only from drift collected by G.
Rossback on the upper Thelon River.

Potamogeton zosteriformis Fern.--thus far known from only a few collections in the Mackenzie

River drainage system.

Ruppia spiralis L.—-known in our area only from near Yohin Lake near the junction of the
South Nahanni and Liard rivers. This situation is widely disjunct from stations in southern

Alberta and Saskatchewan and coastal Alaska (Cody et al. in press).

Zostera marina L.--within our area this species is known only from sheltered tidal flats near

Eskimo Point on the west coast of Hudson Bay (Polunin 1940).
SCHEUCHZERIACEAE

Scheuchzeria palustris L.--not known from our area until 1966, but now recorded from bogs as
Oo
far north as 63 52'N (Cody 1975, Cody and Porsild 1968). It is a circumpolar species.

ALISMACEAE

Sagittaria cuneata Sheldon--rare in the southern Mackenzie Basin, with a widely disjunct
station in the Mackenzie Delta (Cody 1956, 1961, 1978).

GRAMINEAE

Agrostis exarata Trin.--about hot springs in the southern Mackenzie Mountains at the
headwaters of the Flat River and in Nahanni National Park (Cody and Porsild 1968, Scotter and

Cody 1974). These stations are disjunct from stations on the Alaskan Pacific Coast.

Arctagrostis angustifolia Nash--known in the Territory from a single collection at Virginia
Falls on the South Nahanni River (Jeffrey 1961). The type of this species came from Dawson

in the Yukon Territory.

Arctagrostis arundinacea (Trin.) Beal var. crassispica Bowden--this is a robust octoploid
with coarser spikes and culms than var. arundinacea. It has only been reported in our area

from the type locality at Norman Wells and from Hay River (Bowden 1960).

Arctagrostis latifolia (R. Br.) Griseb. ssp. nahanniensis Porsild--thus far known only from
the type locality, Hole-in-the-Wall Lake, and from Bolstead Creek, both in the Mackenzie
Mountains (Porsild 1961).

Bromus ciliatus L.--known only from a few stations in the southern parts of the Mackenzie

River drainage.

Calamagrostis chordorrhiza Porsild--known only from the extreme northwest portion of the
District of Mackenzie. The type locality is the Caribou Hills which line the East Branch of
the Mackenzie River Delta (Porsild 1943).

Calamagrostis deschampsioides Trin.--this is a circumpolar arctic, littoral species which in
our area is known only from the shores of the Beaufort Sea and Hudson Bay, and one inland

station near the Keewatin-Mackenzie border (Porsild 1943, Polunin 1940).

Cinna latifolia (Trev.) Griseb.--in our area known only from flood plains situations along
the Liard River between the British Columbia border and Fort Simpson (Cody 1963, Jeffery
1961, Raup 1947) and on the lower Slave River.

Colpodium vahlianum (Liebm.) Nevski (Puccinellia vahliana (Liebm.) Scribn. & Merr.)--with us
known from a few stations along the Arctic Coast and a widely disjunct site on the Plains of

Abraham in the Mackenzie Mountains (Porsild 1945, Raup 1947).

Danthonia intermedia Vasey--thus far known in our area only from sites adjacent to the South
Nahanni River in Nahanni National Park (Scotter and Cody 1974). The species occurs in the

Yukon Territory near the Mackenzie border and in Wood Buffalo Park in northern Alberta.

Deschampsia pumila (Trin.) Ostenf.--normally a seashore plant which in our area is known from
one site on the Hudson Bay coast and two inland sites in central District of Keewatin
(Polunin 1940).

Distichlis spicata (L.) Greene var. stricta (Torr.) Beetle--this prairie grass is found in
our area only on the Salt Plains west of Fort Smith where it is of rare occurrence (Cody

1956).

Elymus canadensis L.--known in our area only from the west end of Great Slave Lake and as

single site on the Liard River near Fort Liard (Cody 1956, 1963).

Elymus sibiricus L.--known in our area from the banks of the Liard and lower South Nahanni
rivers (Bowden and Cody 1961, Cody 1963). This species is found on the steep eroding and
slumping river banks far from habitations, and thus appears to be of native origin. It is
also occasionally found in cabin clearings. It is possible, however, that the river bank

sites originated from seeds that had been washed downstream from sites in the upper Liard

River watershed where they were dropped from aircraft in an erosion control program. In
North America the species is also known from an eroding bank of the Muskwa River, a tributary
of the Liard, near Fort Nelson, British Columbia (Cody 1967) and in Alaska, near Palmer
(Bowden and Cody 1961).

Festuca ovina L. ssp. alaskana Holmen--this subspecies was described from the north slope of
the Brooks Range in Alaska. It is rare in the Richardson Mountains west of the Mackenzie
River Delta (Cody and Porsild 1968).

Festuca prolifera (Piper) Fern. var. lasiolepis Fern.--known in our area only from Baker Lake
and the Thelon Game Sanctuary (Cody and Porsild 1968).

Glyceria borealis (Nash) Batchelder--this is a boreal North American species which is found
in the Slave River lowlands, near Yellowknife and in Nahanni National Park (Scotter 1966,
Thieret 1963a, Cody et al, in press).

Helictotrichon hookeri (Scribn.) Henry--a western foothills and plains species barely

entering our area along the Hay River (Thieret 1963a).

Hierochloe pauciflora R. Br.--a wide-ranging arctic species found in wet tundra; in our area
found only along the arctic coast; it may be more common than the number of specimens thus

far collected would indicate.

Koeleria asiatica Domin--in our area restricted to the Richardson Mountains west of the

Mackenzie River Delta where it is apparently rare (Cody and Porsild 1968).

Koeleria cristata (L.) Pers.--a species of dry grassland and open woods barely entering the
southwestern part of our area where it is found in shallow residual soil over limestone

(Thieret 1963). It is possibly introduced here.

Muhlenbergia glomerata (Willd.) Trin. var. cinnoides (Link) F.J. Herm.--a boreal North
American variety entering our area in the extreme southwest where it is found on marl
deposits on lake shores and in moist rocky situations along the Liard and South Nahanni

rivers (Thieret 1963, Cody 1963).

Muhlenbergia richardsonis (Trin.) Rydb.--in grassy clearings and rocky slopes about the west
end of Great Slave Lake (Cody 1956, Thieret 1963) and apparently disjunct to the Bear River
(Porsild 1943).

Oryzopsis asperifolia Michx.--in pine woods and thickets, barely entering our area south of
the west end of Great Slave Lake (Thieret 1963a).

Phippsia algida (Sol.) R. Br.--a widespread circumpolar high-arctic species which in our area
is known only from the eastern Reindeer Grazing Preserve (Cody 1965) and two sites in central

Keewatin District.

Phleum commutatum Gaud.--this is a circumpolar species which has large gaps in its
distribution; in our area it is known only from a few alpine meadow sites in the Mackenzie

Mountains (Raup 1947).

Phragmites australis (Cav.) Trin. ex Steud. (Phragmites communis Trin. var. berlandieri
(Fourn.) Fern.)--known in our area only from the vicinity of Yohin Lake in southern Nahanni
National Park, a site which is disjunct by some 725 km from the nearest locality at the
western end of Lake Athabaska (Cody 1963).

Poa abbreviata R. Br.--a high-arctic, amphi-Atlantic species which in our area is known from
Cape Parry on the Arctic Coast of the District of Mackenzie and from south of Spence Bay in
the District of Keewatin (Cody 1978).

Poa alpigena (Fr.) Lindm. var. colpodea (Fr.) Schol.--this mostly viviparous variety is found
on the Arctic Islands and only barely enters our area along the Arctic Coast (Cody and

Porsild 1968).

Poa ammophila Porsild--known only from old established sand dunes along the Arctic Coast

fo)
between longitude 142 W eastward to Darnley Bay, and about Great Bear Lake (Porsild 1943).

Poa flexuosa Sm.--this is a low arctic-alpine, amphi-Atlantic species which barely enters

northeastern District of Keewatin (Cody 1978).

Poa jordalii Porsild--an endemic of the Brooks Range in northern Alaska and the Mackenzie
Mountains where it is known only from soils derived from calcareous rocks (Cody and Porsild

1968).

Poa juncifolia Scribn.--a western prairies and foothills species which barely enters

southwestern District of Mackenzie in alkaline meadows along the Slave River (Cody 1978).

Poa lanata Scribn. & Merr.--rare in the Richardson and Mackenzie Mountains and the East

Channel of the Mackenzie River Delta (Cody 1965b, Porsild 1961).
Poa porsildii Gjaerevoll--an endemic of unglaciated mountains of central Alaska, Yukon

Territory and the east slope of the Richardson and Mackenzie Mountains. The type came from

MacMillan Pass on the Yukon-Mackenzie divide (Cody and Porsild 1968).

Poa scabrella (Thurb.) Benth. (Poa buckleyana Nash)--a Cordilleran species barely entering

our area in the southern Mackenzie Mountains (Raup 1947).

Puccinellia agrostoidea Th. SéJr.--an endemic of the western North American Arctic (Cody

1978). It is a non-littoral species of turfy places in tundra.

Puccinellia andersonii Swallen--known in our area only from the Mackenzie River Delta and
Tuktoyaktuk Peninsula (Cody 1978); a high arctic species known from East Greenland to Banks
Island, and widely disjunct to the Mackenzie Delta and Point Lay, Alaska (type locality).

Puccinellia arctica (Hook.) Fern. & Weath.--thus far known only from the arctic coast of
Canada between Herschel Island, Y.T. and Cape Bathurst, and from southern Banks Island and
Cambridge Bay, Victoria Island. The type is a Richardson collection labelled “Arctic

Sea-Coast”.

Puccinellia contracta (Lge.) Th. Sgr.--this is an amphi-Beringian species which in Canada is
known only from the shores of the Arctic Coast between the Mackenzie River Delta and Cape

Bathurst (Sgrensen 1953).

Puccinellia deschampsioides Th. Sér.--a North American arctic species which in our area is
known only from the east end of Great Bear Lake and the Arctic Coast of the District of

Mackenzie (Sgrensen 1953).

Puccinellia langeana (Berl.) Th. Sér. (P. paupercula (Holm) Fern. & Weath.)--a littoral

species which is rare on the Hudson Bay shore of the District of Keewatin. (Polunin 1940).

Puccinellia pumila (Vasey) Hitchc.--known in our area only from Rankin Inlet on the west
coast of Hudson Bay (Cody and Porsild 1968).

Schizachne purpurascens (Torr.) Swallen--collected only a few times in southwestern District
of Mackenzie (Scotter and Cody 1974, Raup 1947).

Scolochloa festucacea (Willd.) Link--a plains species which barely enters our area at the

west end of Great Slave Lake (Cody 1956).
Spartina gracilis Trin.--known in our area only from the junction of the Little Buffalo and
Nyarling rivers, and opposite Fort Simpson on the bank of the Mackenzie River (Raup 1947,

Cody 1961).

Spartina pectinata Link--known in our area from a single collection from Resolution on the
south shore of Great Slave Lake (Raup 1947).

d'A

Stipa spartea Trin. var. curtiseta Hitchc.--thus far known only from the vicinity of Fort
Simpson (Cody 1961).

Stipa viridula Trin.--in our area known from a single collection from the mouth of the

Rabbitskin River southeast of Fort Simpson (Cody 1963).

Vahlodea atropurpurea (Wahlenb.) Fries ssp. atropurpurea--known only from a few collections
east of longitude 110°w (Cody 1978).

Vahlodea atropurpurea (Wahlenb.) Fries ssp. latifolia (Hook.) Porsild (ssp. paramushirensis

sensu Raup 1947)--rare in the western parts of the Mackenzie Mountains (Raup 1947).
CYPERACEAE

Carex albo-nigra Mack.--known from only a few widely separated sites in western District of
Mackenzie (Cody 1963, Porsild 1943, Raup 1947).

Carex arcta Boott--a boreal North American species which has been found iff our area only at

Hjalmer Lake, south of the east arm of Great Slave Lake (Cody 1978).

Carex bebbii Olney--wet meadows in southwestern District of Mackenzie (Raup 1947, Thieret

1963a).

Carex bicolor All.--rare in central District of Keewatin, north of Great Bear Lake and along

the Arctic Coast (Porsild 1943).

Carex crawfordii Fern.--this is a boreal North American species which barely enters our area

south of Great Slave Lake (Thieret 1963).

Carex deweyana Schw.--the only records for this species in the Continental Northwest
Territories are from the Liard Range and in the lowlands of the Liard River (Jeffrey 1961).

Carex filifolia Nutt. (C. elynaeformis Porsild)--rare and thus far known from only four
widely separated localities: Great Bear Lake, Wrigley, Nahanni Butte, and the west end of
Great Slave Lake (Porsild 1943, 1951, Cody 1963, Cody and Talbot 1978).

Carex franklinii Boott (C. petricosa sensu Porsild 1945)--a Cordilleran foothills species

which in our area is known from only a few collections in the Mackenzie Mountains (Porsild

1945, Scotter and Cody 1974).

Carex interior Bailey--known in our area only from Nahanni National Park and from near the

west end of Great Slave Lake (Scotter and Cody 1974, Thieret 1961).

Carex laxa Wahlenb.--an Eurasian species which in North America is thus far known from only
two stations in Alaska, one in central Yukon Territory and one in the Mackenzie River Delta
(Porsild 1951).

Carex livida Willd. var. grayana (Dew.) Fern.--thus far in our area known only from near the
west end of Great Slave Lake and the Mackenzie River Delta (Cody and Talbot 1978, Porsild
1943).

Carex loliacea L.--apparently rare in sphagnum bogs in the southern parts of our area (Raup
1947, Scotter 1966).

Carex mackenziei Krecz. (C. norvegica Willd. non Retz.)--a littoral species which in our area
is known only from the Mackenzie River Delta and the west coast of Hudson Bay (Porsild 1943,

Polunin 1940).

Carex macloviana d'Urv. (C. soperi Raup)--rare in the western Mackenzie Mountains, the
Richardson Mountains and about Great Bear Lake (Raup 1947, Scotter and Cody 1974).

Carex morrisseyi Porsild--rare in central Keewatin and northwestern District of Mackenzie
(Porsild 1943).

Carex norvegica Retz. ssp. inserrulata Kalela--amphi-Atlantic and in our area known only from

the Hudson Bay coast and central District of Keewatin (Porsild 1943).

Carex oligosperma Michx.--an eastern boreal North American species which in our area is known

only from north of the east arm of Great Slave Lake.
Carex peckii Howe--a North American species which is found in Canada from New Brunswick to
Alberta, with disjunct stations in Nahanni National Park in south-western District of

Mackenzie, the Yukon Territory, and central Alaska (Scotter and Cody 1974).

Carex phaeocephala Piper--a species of the northern Cordillera which in our area is known
only from Glacier Lake in the southern Mackenzie Mountains (Raup 1947).

Carex praticola Rydb.--known only from a cultivated field at Fort Simpson (Raup 1947).

Carex pyrenaica Wahlenb. ssp. micropoda (C.A. Mey.) Hult.--in Mackenzie District known only

from a few stations in the Mackenzie Mountains north to Macmillan Pass (Raup 1947).

Carex ramenskii Kom.--known only in brackish meadows in the Mackenzie Delta region (Porsild

1943-sub C. salina pro parte).

Carex rariflora (Wahlenb.) Sm. var. androgyna Porsild--known only from the type locality on
the Arctic Coast east of the Mackenzie Delta (Porsild 1943).

Carex retrorsa Schw.--an eastern North American species which in our area is known only from

lower Liard River (Cody 1961, Raup 1947).

Carex richardsonii--a western North American species which barely enters our area south of

Great Slave Lake (Raup 1936, Cody and Talbot 1978).

Carex rufina Drej.--an amphi-Atlantic species which is thus far known in North America from

Greenland and a few stations in the District of Keewatin and north-eastern Manitoba.

Carex sartwellii Dewey--a North American species which in our area is found along the Slave

River lowlands and west of Great Slave Lake (Thieret 1961).

Carex stenophylla Wahlenb. ssp. eleocharis (Bailey) Hult. (C. eleocharis Bailey)--a species
of dry prairies thus far known in our area only from a dry hillside overlooking the Mackenzie

River at Rabbitskin River (Cody 1963).

Carex sychnocephala Carey--a boreal North American species thus far known in our area only
from about Great Slave Lake (Cody 1956, 1978).

Carex trisperma Dew.--an easten North American species found from Labrador to eastern
Alberta, which in our area is known from a single depauperate specimen from southeast

District of Mackenzie (Cody and Porsild 1968).
Eleocharis compressa Sulliv.--the single collection from our area is from a population at
Heart Lake in southwestern District of Mackenzie, an area disjunct from the main range to the

south by 725 km (Cody and Talbot 1978).

Eleocharis uniglumis (Link) Schult. (E. macrostachya sensu Cody 1960)--Liard River shores and
Mackenzie River shore at Norman Wells (Cody 1960, Jeffrey 1961).

Eriophorum gracile Koch--known only from peaty bogs and lake shores about Great Slave Lake,
and in Nahanni National Park (Thieret 1963a, Cody et al in press).

Eriophorum viridicarinatum (Engelm.) Fern.--rare about Great Slave Lake and in the central
Mackenzie Mountains (Raup 1936, Thieret 1961).

Rhynchospora alba (L.) Vahl--known in our area only from near Heart Lake in southwestern
District of Mackenzie from a eutrophic wet-level fen. This site is disjunct from the nearest

known site on the south shore of Lake Athabaska by some 480 km (Cody and Talbot 1978).

Scirpus maritimus L. var. paludosus (A. Nels.) Kiik.--in the District of Mackenzie known only
from the Salt Plain west of Fort Smith (Cody 1956).

Scirpus rollandii Fern.--known in our area from only three sites: one on the Yellowknife
Highway and two in the Mackenzie Mountains (Thieret 1962, Cody 1978, Cody et al in press).

Scirpus rufus (Huds.) Schrad.--known in western Canada from several widely separated
localities and from the District of Mackenzie only from near Wrigley on the Mackenzie River
and “Caribou Flats” in the Mackenzie Mountains (Cody and Porsild 1968, Cody 1978).

ARACEAE

Acorus calamus L.--a single collection from along the Yellowknife Highway near Fort Rae
(Thieret 1963b) might possibly represent an introduction, but the species was reported by
Father Petitot (1891) in his memoirs, as occuring near Lac la Martre some 100 km northwest of

Fort Rae.

JUNCACEAE

Juncus drummondii E. Mey.--thus far known in our area only from the Mackenzie Mountains near

the Yukon border where it is found in alpine snowbeds and on damp slopes (Raup 1947).

Juncus dudleyi Weig.--a boreal North American species which enters our area only along the
Slave River north of Fort Smith (Cody and Porsild 1968).

Juncus stygius L. ssp. americanus (Buch.) Hult.--a boreal North American subspecies,
apparently with several disjunct populations, which is found in our area only near the west
end of Great Slave Lake (Thieret 1961).

Juncus vaseyi Engelm.--a boreal North American species which is known in our area from only a

few collections from southwestern District of Mackenzie (Raup 1947, Thieret 1962, Scotter
1966).

Luzula arcuata (Wahlenb.) Sw.--found in our area only on alpine slopes and sandy beaches and

moraines in the Mackenzie and Richardson mountains (Raup 1947).

Luzula rufescens Fisch. & Mey.--known in our area only from Canoe Lake in the Richardson

Mountains (Cody and Porsild 1968). It is an amphi-Beringian species.

LILIACEAE

Maianthemum canadense Desf. var. interius Fern.--this western variety barely enters the
District of Mackenzie in the pine woodlands in the vicinity of Fort Smith and is also found

in the lowlands of the Liard River (Raup 1947).

Streptopus amplexifolius (L.) DC. var. americanus Schultes--known only in the upper Liard
River valley and from about hot springs in the southern Mackenzie Mountains (Jeffrey 1961,

Porsild 1961).

Trillium cernuum L. var. macranthum Eames & Wieg.--the only record for this is a Richardson
specimen labelled “Mackenzie River” (Raup 1947). The species is otherwise known in Western

Canada only from southern Manitoba so the Mackenzie record may be doubtful.

Veratrum eschscholtzii A. Gray--wet meadows and about hotsprings in the southwestern

Mackenzie Mountains (Raup 1947, Scotter and Cody 1974).

ORCHIDACEAE

Cypripedium acaule Ait.--this species was reported for our area by Raup (1947) on the basis
of a Richardson specimen labelled “Ft. Franklin”. This specimen is presumably the basis for
Hooker's (1829-40) range “from Canada to Fort Franklin on the Mackenzie River”. The species

is not otherwise known from north of Lake Athabaska.
Cypripedium guttatum Sw.--an amphi-Beringian species which extends eastwards into the
District of Mackenzie as far as the east end of Great Slave Lake. It is rare and very

localized in distribution.

Habenaria dilatata (Pursh) Hook.--thus far known in our area only from sites about hot

springs in the southwestern Mackenzie Mountains (Porsild 1961, Scotter and Cody 1974).

Habenaria orbiculata (Pursh) Torr.--a boreal American species which in our area is found only

in the southern Mackenzie Mountains (Raup 1947, Jeffrey 1961, Cody et al in press).

Habenaria viridis (L.) R. Br. var. bracteata (Muhl.) Fern.--thus far known in the District of
Mackenzie only from the Slave River valley near Fort Smith, and from the east flanks of the

Mackenzie Mountains north to near Norman Wells (Cody 1956, 1960, Raup 1947).

Liparis loeselii (L.) Rich.--known in our area only from the vicinity of Yohin Lake in
southern Nahanni National Park, a site which is disjunct by some 1450 km from the nearest

known locality south of the Saskatchewan River in Saskatchewan (Cody et al in press).

Listera cordata (L.) R. Br.--a circumpolar species which in our area is known only from two

sites in the southern Mackenzie Mountains (Jeffrey 1961, Porsild 1961).

Malaxis paludosa (L.) Sw.--thus far known only from an open black spruce muskeg in the upper
Liard River valley (Cody 1963).

SALICACEAE

Salix barclayi Anderss.--a northern Cordilleran-Pacific Coast species which enters the
District of Mackenzie only in Mackenzie and Richardson mountains near the Yukon border (Raup
1947).

Salix barrattiana Hook.--a northern Cordilleran species found in the Mackenzie Mountains,
with a disjunct station near the Anderson River in the Reindeer Grazing Preserve (Raup

1947).

Salix chamissonis Anderss.--an amphi-Beringian species which is found in the District of
Mackenzie only in the Richardson Mountains where it occurs in grassy snowbed habitats

(Porsild 1943).

Salix commutata Bebb--a northern Cordilleran species which barely enters our area in the

Mackenzie Mountains (Raup 1947).

Salix cordifolia Pursh var. callicarpea (Trautv.) Fern.--a northeastern North American
variety which is known in our area only from central District of Keewatin and the eastern

parts of the District of Mackenzie (Porsild 1957).
Salix discolor Muhl.--known in our area from a collection from Fort Simpson, and mile 77

Mackenzie Highway, sites which are disjunct by some 500 miles from the nearest known locality

in Alberta (Cody 1978).

107]

Salix dodgeana Rydb. (S. phlebophylla sensu Porsild 1945 and Raup 1947)--localized in alpine
turfy places on calcareous plateaus and screes in the Mackenzie and Richardson Mountains

(Porsild 1945, Raup 1947, Porsild and Cody 1968.)

Salix farriae Ball--a Cordilleran species which forms thickets on alluvial river banks in the

Mackenzie River Delta (Hultén 1942).

Salix fullertonensis Schneider--known only from adjacent to the shores of Hudson and James

bays (Polunin 1940).

Salix gracilis Anderss. (S. petiolaris J.E. Sm.)--an eastern woodland species known in our
area from only a few stations along the Slave and upper Mackenzie rivers (Raup 1947, Thieret
1963a).

Salix maccalliana Rowlee--a western North American species which in our area is found in

woodland peat bogs in southwestern District of Mackenzie (Cody 1956, Thieret 1961).

Salix ovalifolia Trautv. var. arctolitoralis (Hult.) Argus--known in our area only from the

Arctic Coast of northwestern District of Mackenzie (Hultén 1940).

Salix phlebophylla Anderss.--an amphi-Beringian, arctic-alpine species barely entering our
area in the Richardson Mountains, and reaching the Arctic Coast east of the Mackenzie Delta

(Porsild 1943).

Salix polaris Wahlenb. ssp. pseudopolaris (Flod.) Hult.-- an amphi-Beringian, arctic-alpine
species known in our area only from the Mackenzie and Richardson Mountains, and from the

Caribou Hills east of the Mackenzie Delta (Raup 1947, Cody 1965a, Porsild and Cody 1968).

POLYGONACEAE

Koenigia islandica L.--an annual, circumpolar, arctic alpine species with only a few widely

disjunct stations in our area (Polunin 1940, Porsild and Cody 1968, Cody 1978).

Polygonum alaskanum (Small) Wight (P. alpinium All. var. lapathifolium Cham. & Schlecht.)--an
Alaskan species which enters the District of Mackenzie in the extreme northwest and in the

Mackenzie Mountains adjacent to the Yukon border (Porsild 1943, 1945).

Polygonum caurianum Robins.--known in our area from the Hudson Bay coast, northwest of Great
Slave Lake, the east end of Great Bear Lake and the Mackenzie Delta region (Cody and Porsild
1974).

Polygonum coccineum Muhl.--a single apparently widely disjunct station has been recorded from

the shore of the Hay River south of Great Slave Lake (Thieret 1961).

Rumex acetosa L. ssp. alpestris (Scop.) Léve--known in our area from a single collection from

the Richardson Mountains west of the Mackenzie Delta (Porsild 1943).

Rumex maritimus L. var. fueginus (Phil.) Dusen--apparently rare and local by saline or

0
alkaline seepages north to latitude 62 on the Mackenzie River.

Rumex orbiculatus Gray--a North American species which is found in Canada from Newfoundland

to Alberta and barely enters our area south of Great Slave Lake (Cody 1978).

CHENOPODIACEAE

Atriplex gmelinii C.A. Meyer--an amphi-Beringian species which is known in our area only from

the delta of the Anderson River on the Arctic Coast (Cody 1965a).

Atriplex subspicata (Nutt.) Rydb.--found in our area only on the Salt Plain west of Fort

Smith, where it occurs in saline or alkaline soils (Bassett and Crompton 1973).

Chenopodium glaucum L. ssp. salinum (Standl.) Aellen--saline seepages along banks of the
Mackenzie River north to the Arctic Coast (Cody 1960).

Chenopodium leptopyllum Nutt.--the only collection of this species from our area is a
Richardson specimen labelled “Fort Franklin, Mackenzie River”, but this species is not

otherwise known from north of Lake Athabaska (Raup 1947).

Chenopodium rubrum L.--saline places north to Great Slave Lake; a circumpolar species
(Thieret 1963a).

Corispermum hyssopifolium L.--a circumpolar species which in our area is known only from
sandy places north along the Mackenzie River to about latitude 65°N (Raup 1947).

Salicornia rubra A. Nels. (SE europaea of authors)--although common and locally dominant on
the saline flats west of Fort Smith, this species is only known from as far north as the

junction of the Nyarling and Little Buffalo rivers (Raup 1947).

Suaeda calceoliformis (Hook.) Moq. (S. depressa (Pursh) S. Wats.--a North American species
thus far known in our area from the Salt Plain west of Fort Smith, Great Bear Lake and the

Arctic Coast (Bassett and Crompton 1978).

PORTULACEAE

Claytonia megarrhiza (A. Gray) Parry--a high-alpine Cordilleran species known from a few
collections in the Mackenzie Mountains where it is widely disjunct from the main range from

Colorado to British Columbia and Alberta (Raup 1947).

Claytonia tuberosa Pall.--the collections from the Mackenzie Mountains in our area are from
the eastern extremity of an amphi-Beringian range (Porsild and Cody 1968, Scotter and Cody
1974).

Montia lamprosperma Cham.--an annual, circumpolar species which in our area is known only
from the Hudson Bay Coast, the Mackenzie Mountains and the Reindeer Grazing Preserve (Polunin

1940, Scotter and Cody 1974, Cody 1965b).

CARYOPHYLLACEAE

Arenaria capillaris Poir. var. nardifolia (Ledeb.) Regel--amphi-Beringian, found in our area
on the northwest side of Great Slave Lake, about Great Bear Lake and in the Reindeer Grazing
Preserve (Porsild 1943, Thieret 1963).

Cerastium maximum L.--an amphi-Beringian species, which in our area is known from a single

collection from the Richardson Mountains (Nagy et al 1979).

Cerastium nutans Raf.--a wide-ranging North American species which barely enters our area in

southwestern District of Mackenzie, where it may be introduced (Cody 1961, Thieret 1961).

Cerastium regelii Ostf.--a circumpolar species which is common in some parts of the Canadian
Arctic Archipelago, but on the Canadian mainland is known only from the Melville and
Tuktoyaktuk peninsulas (Cody 1978).

Melandrium apetalum (L.) Fenzl ssp. attenuatum (Farr) Hara--this Cordilleran subspecies of
the circumpolar M. apetalum is found on slide-rock as far north as the central Mackenzie
Mountains (Scotter and Cody 1974, Raup 1947 sub Lychnis macrosperma).

Melandrium taimyrense Tolm.--an amphi-Beringian species which extends into our area in the

northwest in the Mackenzie Delta region, about Great Bear Lake and on the Thelon River
(Porsild 1943).

Melandrium taylorae (Robins.) Tolm.--an Alaska-Yukon-northwest Mackenzie endemic which in our
area is found in the Mackenzie Delta region and about Great Bear Lake (Porsild 1943).

Minuartia macrocarpa (Pursh) Ostenf.--an amphi-Beringian species known in our area from only

a few specimens from the central Mackenzie Mountains (Raup 1947).

Minuartia obtusiloba (Rydb.) House--an amphi-Beringian species known in our area only from

the Richardson Mountains and Mackenzie River Delta (Porsild 1943).

Minuartia yukonensis Hult. (Arenaria laricifolia sensu Porsild 1943)--an amphi-Beringian
alpine species which reaches eastwards to the Richardson Mountains of northwestern District
of Mackenzie (Porsild 1943).

Moehringia macrophylla (Hook.) Torr. (Arenaria macrophylla Hook.)--dry wooded slopes in the
Pre-Cambrian region south of Great Slave Lake; apparently restricted to soils derived from

magnesian or ultrabasic rocks and thus of rather spotty and disjunct range (Raup 1936).

Sagina caespitosa (J. Vahl) Lge.--an amphi-Atlantic arctic species which thus far is known in
our area only from central District of Keewatin (Porsild 1957).

Sagina intermedia Presl--a circumpolar species known from a number of widely separated
collections across our area but perhaps overlooked because of its size (Polunin 1940, Porsild

and Cody 1968).

Sagina linnaei Presl (S. saginoides (L.) Karst.)--a low-arctic circumpolar species known in
our area from coastal and central District of Keewatin, and the Mackenzie Mountains in

western District of Mackenzie (Polunin 1940, Raup 1947).

Sagina nodosa (L.) Fenzl--an amphi-Atlantic species which has been collected a few times

across our area as far west as the Mackenzie River (Raup 1947, Porsild 1943).

Silene menziesii Hook.--a western North American species known in our area from only a few

collections in southwestern District of Mackenzie (Raup 1947, Thieret 1963a).

Silene repens Patrin ssp. purpurata (Greene) Hitchc. & Maguire--endemic of central Alaska,

Yukon Territory and northwestern District of Mackenzie where is is found in the Richardson

Mountains, Richards Island, Caribou Hills and western Eskimo Lake Basin (Porsild 1943, Cody
1965a).

Spergularia marina (L.) Griseb.--a circumpolar, non-arctic species with disjunct stations
from Nova Scotia to southeast Alaska, which barely enters the District of Mackenzie on the
Salt Plains west of Fort Smith (Raup 1947).

Stellaria crassipes Hult.--an amphi-Atlantic species which in our area is only known from a

few collections in northern and eastern District of Keewatin (Porsild 1957).

Stellaria stricta Richards.--a western North American species which in our area is known from

along the Mackenzie drainage to the Arctic Coast from only a few collections (Porsild 1963).

Stellaria umbellata Turcz.--an amphi-Beringian species which extends across Alaska to the
east slope of the Richardson mountains of northwestern District of Mackenzie, and is disjunct

to the mountains of southwestern Alberta, Nevada and Oregon (Cody 1978).

Wilhelmsia physodes (Fisch.) McNeill (Arenaria physodes Fisch.)--an amphi-Beringian species
which is frequent in Alaska and the Yukon Territory but enters the District of Mackenzie only
in the far northwest where it is found in Richardson Mountains and eastwards along the Arctic

Coast as far as Darnley Bay (Cody 1956a).

CERATOPHYLLACEAE
Ceratophyllum demersum L.—-known in our area from recent collections near Yellowknife and in
southern Nahanni National Park, but also from peat deposits in a pingo in the upper Thelon
River valley on the basis of well preserved fruits radio-carbon dated at 5,500 _ 250 years BP
(Thieret 1962, Scotter and Cody 1974).

NYMPHAECEAE

Nuphar polysepalum Engelm.--Mackenzie River Delta and Eskimo Lakes region of northwestern
District of Mackenzie (Cody and Porsild 1968).

Nymphaea tetragona Georgi ssp. leibergii (Morong) Porsild--a circumpolar species which in
North America is known from often widely separated stations from Quebec to Alaska, and in our
area has only been found on an island at the east end of Great Slave Lake (Porsild 1939).

RANUNCULACEAE

Anemone canadensis L.--restricted to the lowland of southwestern District of Mackenzie (Raup

1947).

Anemone drummondii Wats.--known in our area from only a few sites in the Mackenzie and
Richardson mountains and on the east side of the Mackenzie River Delta (Cody 1965b, Porsild
and Cody 1968).

Anemone narcissiflora L.--an amphi-Beringian species which reaches eastward to the Richardson

and Mackenzie mountains (Porsild 1943, Scotter and Cody 1974).

Caltha natans Pall.--a boreal, amphi-Beringian species which is found as far east as the west
coast of Hudson Bay and extreme western Ontario but in our area known only from about Great
Slave Lake and south-central and coastal District of Keewatin (Cody 1956, Thieret 1961,
Porsild 1943).

Caltha palustris L. var. palustris--this variety is eastern in distribution in North America
and is found in our area only about Great Slave Lake, and a disjunct station in the Mackenzie

River Delta (Raup 1947, Porsild and Cody 1968).

Caltha palustris L. var. arctica (R. Br.) Huth.--this amphi-Beringian variety extends into
our area in the Mackenzie River Delta, along the Arctic Coast, and is found in central
District of Keewatin (Cody 1965a, Porsild and Cody 1968); it also occurs in the western
islands of the Canadian Arctic Archipelago (Porsild 1957).

Coptis trifolia (L.) Salisb.--this species occurs from east Asia to east Greenland and is
known from all the Canadian provinces, but from our area is known only from a single station

in southern District of Keewatin (Porsild 1957).

Ranunculus abortivus L.--a boreal North American species rare in southwestern District of

Mackenzie (Cody 1956, Scotter and Cody 1974).
Ranunculus eschscholtzii Schlecht.--a Cordilleran-Pacific Coast species which is found in the
Mackenzie Mountains adjacent to the Yukon border, north to the Mackenzie Delta, and a single

station on Great Bear Lake (Raup 1947).

Ranunculus gelidus Karel & Kiril.--an amphi-Beringian species which is rare on the alpine

slopes of the Mackenzie and Richardson mountains (Porsild 1943, Porsild and Cody 1968).

Ranunculus pallasii Schlecht.--a circumpolar, low-arctic species which is found in brackish

meadows and sloughs along the Arctic Coast and on the Hudson Bay shore (Porsild 1943).

Ranunculus pensylvanicus L.f.--a boreal North American species known in our area from south
of Great Slave Lake and from Fort Simpson (Cody 1956, 1961).

Ranunculus rhomboideus Goldie--a North American species which is found from southern Ontario
to British Columbia and southward, with an apparently disjunct station on the Salt Plains
west of Fort Smith (Cody 1956).

Ranunculus sabinei R. Br.--a high-arctic, amphi-Beringian species which is known in our area

only from along the Arctic Coast (Porsild 1957).

Ranunculus septentrionalis Poir.--a North American species which is found in Canada from New
Brunswick to British Columbia but enters our area only in the lowlands of the Liard River

near Fort Liard (Jeffrey 1961).

Ranunculus sulphureus Sol.--a circumpolar arctic-alpine species which in our area is known
only from a few collections in the Mackenzie and Richardson mountains (Cody and Porsild

1968).

Ranunculus turneri Greene--an amphi-Beringian species which barely enters our area in the

sub-alpine meadows in the Richardson Mountains.

Thalictrum sparsiflorum Turcz. var. richardsonii (Gray) Boivin--an amphi-Beringian species
which extends as far east as the west coast of Hudson Bay, but in our area is only known from

the upper Liard River valley (Jeffrey 1961).

PAPAVERACEAE
Papaver cornwallisensis A. Lôve--the high-alpine sites in the Mackenzie and Richardson
mountains are disjunct from the high-arctic distribution in Greenland and the Canadian Arctic

Archipelago (Cody and Porsild 1968).

Papaver hultenii Knaben--endemic of arctic-alpine northwest North America and with us found

along the Arctic Coast and in the Mackenzie Mountains (Knaben 1959).
Papaver keelei Porsild--an endemic of arctic-alpine northwest North America and in our area
found in the Mackenzie and Richardson mountains; the type was collected along the Canol Road

at the Little Keele River (Porsild 1945).

Papaver macconnellii Hultén--an endemic of central Alaska, northern Yukon Territory and the

Richardson mountains of northwestern District of Mackenzie (Cody and Porsild 1968).

FUMARTACEAE

Corydalis pauciflora (Steph.) Pers.--an amphi-Beringian species which barely enters our area
in alpine herbmats in the Mackenzie Mountains near the Yukon border (Raup 1947).

CRUCIFERAE

Alyssum americanum Greene--this species is an endemic of unglaciated central Alaska and the
Yukon Territory; a specimen in the Herbarium of the National Museum of Canada labelled “Fort

Simpson 1853" most likely originated in the Yukon Territory (Cody and Porsild 1968).

Arabis alpina L.--an amphi-Atlantic species which as yet is known in our area from a single

collection from Dubawnt Lake in the District of Keewatin.

Arabis lyrata L. var. kamchatica Fisch.--an amphi-Beringian species which is found in our
area in the Mackenzie Mountains near the Yukon border, the east end of Great Bear Lake, and

from near Fort Smith (Porsild 1943, Raup 1947).

Braya glabella Richards.--an endemic of northwest District of Keewatin, northern Yukon and
northern Alaska (Porsild 1943).

Braya henryae Raup--an endemic of the northern Rocky Mountains, Mackenzie Mountains and
Richardson Mountains (Raup 1947).

Braya purpurascens (R. Br.) Bunge--a circumpolar high-arctic species which in our area is
found along the Arctic Coast and in the Mackenzie Mountains (Porsild 1943).

Braya richardsonii (Rydb.) Fern.--an endemic of northwestern North America which, in our

area, is known only from the Mackenzie Mountains (Porsild 1945).

Cardamine microphylla Adams (C. minuta Willd.)--an amphi-Beringian species which in our area
is rare in the Richardson and Mackenzie mountains (Cody and Porsild 1968, Cody 1978).

Cardamine parviflora L. var. arenicola (Britt.) O.E. Schulz--an eastern North American taxon
which is found as far west as northeastern British Columbia and with us is found in sandy
open places at Yellowknife and about the east end of Great Slave Lake (Cody 1956, Scotter
1966).

Cardamine pensylvanica Muhl.--an eastern boreal forest species which is found sparingly in
southwestern District of Mackenzie (Raup 1947, Cody 1956).

Cardamine umbellata Greene--an amphi-Beringian species which barely enters our area on wet
stream and lake banks in the western Mackenzie Mountains adjacent to the Yukon border (Cody

and Porsild 1968).

Descurainia pinnata (Walt.) Britt. var. brachycarpa (Richards.) Fern.--a North American
species which barely enters the Mackenzie River Valley (Cody 1956).

Draba albertina Greene--a Cordillern species which is known in the Mackenzie Mountains from a

single collection (Mulligan 1975).
Draba aurea M. Vahl--a North American, arctic-alpine species which in our area is known from
only a few collections about Great Slave Lake, Great Bear Lake, the Mackenzie Delta and the

Mackenzie Mountains (Raup 1947, Cody and Porsild 1968).

Drabis borealis DC. (D. luteola sensu Porsild)--an amphi-Beringian species found in our area

about Great Bear Lake and in the southern Mackenzie Mountains (Porsild 1943).

Draba crassifolia Grah.--a sub-arctic, alpine species known in our area from central District

of Keewatin, the Mackenzie Delta and the Mackenzie Mountains (Porsild 1943).

Draba incerta Payson--a north Cordilleran species which reaches our area in the southern

Mackenzie Mountains (Raup 1947).

Draba lonchocarpa Rydb.-- a Cordilleran species which is found in our area only in the

southern Mackenzie Mountains (Scotter and Cody 1974).

Draba macounii O.E. Schulz--a Cordilleran species which extends northward into the southern

Mackenzie Mountains (Cody and Porsild 1968).

Draba norvegica Gunn.--an amphi-Atlantic species which is known in our area from a single

locality north of the east arm of Great Slave Lake (Mulligan and Cody 1968).

Draba oligosperma Hook.--a Cordilleran species which is found in our area along the Liard

River, about Great Bear Lake and in the Mackenzie Delta area (Porsild 1943).

Draba palanderiana Kjellm.--an endemic of Alaska, Yukon and the Mackenzie Mountains of the
District of Mackenzie (Mulligan 1974).

Draba pilosa Adams--an amphi-Beringian, arctic-alpine species which is known from only a few

collections across our area (Porsild and Cody 1968).

Draba porsildii G.A. Mulligan--a Cordilleran species which is found in our area only in the
central Mackenzie Mountains (Scotter and Cody 1974, Mulligan 1974).

Draba praealta Greene--a Cordilleran species found in our area in the Mackenzie Mountains and

as far north as Great Bear Lake (Raup 1947).

Draba ogilviensis Hult. (D. sibirica sensu Porsild)--endemic of the Ogilvie Mountains

in the Yukon Territory and the central Mackenzie Mountains (Cody and Porsild 1968).

Draba subcapitata Simm.--an amphi-Atlantic, high-arctic species thus far known from the North
American mainland only from Boothia and Melville peninsulas (Porsild 1957).

Halimolobos mollis (Hook.) Rollins (Arabis hookeri Lange)--an endemic of arctic north America
from Alaska to west Greenland, but in our area known only from western District of Mackenzie

(Porsild 1943, Cody 1956).
Lepidium bourgeauanum Thell.--lowland southwestern District of Mackenzie (Cody 1960).

Lesquerella calderi Mulligan & Porsild--an endemic of the Ogilvie Mountains in central Yukon
and the east and west slopes of the Richardson Mountains (Mulligan and Porsild 1969, Cody
1978).

Parrya arctica R. Br.--a high-arctic endemic of the palaeozoic parts of the Canadian Arctic
Archipelago which is found as far south as Great Bear Lake (Porsild 1957).

Parrya nudicaulis (L.) Regel--an amphi-Beringian species in our area known from the
Richardson and Mackenzie Mountains and from a site on the Arctic Coast on Dolphin and Union

Strait (Raup 1947).

Rorippa barbareaefolia (DC.) Kitagawa--an amphi-Beringian species known in our area only fron

a single collection from Fort McPherson (Hultén 1968).
Rorippa calycina (Engelm.) Rydb.--known in Canada only from the mouth of the Anderson River
on the Arctic Coast, disjunct by 2,500 miles from the nearest locations in Montana, U.S.A.

(Mulligan and Porsild 1966).

Rorippa crystallina Rollins--an endemic of the lowland area northwest of Great Slave Lake
(Rollins 1962, Thieret 1963).

Smelowskia borealis (Greene) Drury & Rollins (Melandion boreale Greene)--an endemic of
unglaciated mountains of central and northern Alaska, Yukon Territory and western District of

Mackenzie (Raup 1947).

Smelowskia calycina (Stephan) C.A. Mey. var. media Drury & Rollins--an endemic of N.E.
Alaska, Yukon and the Richardson and Mackenzie mountains (Porsild 1943, Cody et al in

press).

Subularia aquatica L. ssp. americana Mulligan and Calder--S. aquatica s.l. is circumpolar in
distribution but with wide gaps; the ssp. americana is known in our area only from south
central District of Keewatin, and Yellowknife, Indian Lake and the east end of Great Bear
Lake in the District of Mackenzie (Porsild 1943, Cody 1956).

Thellungiella salsuginea (Pall.) O.E. Schulz (Arabidopsis glauca(Nutt.) Rydb.--widely
disjunct in our area from the Salt Plains west of Fort Smith to the Arctic Coast of the

Mackenzie Delta (Porsild 1943, Cody 1956).

SARRACENIACEAE
Sarracenia purpurea L.--a North American species which is found in Canada from Newfoundland
to northern British Columbia and southwestern District of Mackenzie, where it is quite rare
(Cody and Talbot 1973).

CRASSULACEAE

Rhodiola integrifolia Raf.--an amphi-Beringian species which is found in our area only in the
Mackenzie and Richardson mountains (Raup 1947).

Tillaea aquatica L.--a circumpolar species with wide gaps in distribution, known in our area
only from Yellowknife Bay (Cody 1954a).

SAX I FRAGACEAE

Chrysosplenium wrightii Franch. & Sav.--an amphi-Beringian species penetrating our area only
in the Richardson and Mackenzie Mountains (Cody and Porsild 1968).

Heuchera richardsonii R. Br.--a North American species which is found in Canada from western

Ontario to British Columbia and the Slave and Mackenzie river valleys in the District of
Mackenzie (Raup 1947).

Leptarrhena pyrolifolia (D. Don) Ser.--a Cordilleran-Pacific Coast species which reaches
northeast to the western parts of the Mackenzie Mountains (Cody 1978).

Parnassia fimbriata Koenig--a Cordilleran species which enters the District of Mackenzie on

the east slope of the Mackenzie Mountains (Raup 1947),

Saxifraga adscendens L. ssp. oregonensis (Raf.) Bacigalupi--a Cordilleran species found in

our area only in the western parts of the Mackenzie Mountains (Porsild 1961).

Saxifraga aizoon Jacq. var. neogaea Butters--this variety of the amphi-Atlantic S. aizoon is
known with us only from the east end of Great Slave Lake, (Raup 1936), disjunct from its

nearest station in southern Baffin Island by some 900 miles.

Saxifraga bronchialis L. ssp. funstonii (Small) Hult.--amphi-Beringian, found in our area
only in the Richardson Mountains (Porsild 1943).

Saxifraga davurica Willd. ssp. grandipetala (Engl. & Irmsch.) Hult.--amphi-Beringian,
reaching into our area in the Mackenzie and Richardson Mountains (Porsild 1966a, Porsild and
Cody 1968).

Saxifraga ferrunginea Grah.--a Pacific Coast species with us known only from a single and
widely disjunct station on the lower Peel River west of the Mackenzie Delta (Porsild 1943).

Saxifraga flagellaris Willd. ssp. flagellaris--S. flagellaris s. lat. is circumpolar,
arctic-alpine; the ssp. flagellaris is amphi-Beringian and found with us only in the

Richardson and Mackenzie Mountains (Porsild 1954).

Saxifraga lyallii Engler--a Cordilleran species reaching the east slope of the Mackenzie
Mountains in the District of Mackenzie (Raup 1947).

Saxifraga punctata L. ssp. nelsoniana (D. Don) Hult.--ssp. nelsoniana is amphi-Beringian in
distribution and barely enters the District of Mackenzie west of the Mackenzie River Delta

(Porsild 1951).

Saxifraga radiata Small--an amphi-Beringian species known with us only in the Mackenzie and

Richardson Mountains (Raup 1947).

Saxifraga reflexa Hook.--an endemic of Alaska, Yukon and the mountains of western Mackenzie

District eastward near the Arctic Coast to Cape Dalhousie (Porsild 1943).

Saxifraga serpyllifolia Pursh--an amphi-Beringian, arctic-alpine species which enters the
District of Mackenzie in the Mackenzie and Richardson mountains and is then disjunct to
Melville Island in the Canadian Arctic Archipelago (Porsild and Cody 1968, Porsild 1945).

ROSACEAE

Chamaerhodos erecta (L.) Bge. ssp. nuttallii (T. & G.) Hult.--a western foothills and plains
species which is the sole representative of a small, otherwise central Asiatic genus, known
in our area from a single collection in the central Mackenzie Mountains (Cody and Porsild

1968).

Dryas alaskensis Porsild--an endemic of Alaska, Yukon and western District of Mackenzie where
it is known in the Richardson Mountains and a disjunct station in the southern Mackenzie

Mountains (Porsild 1947).

Dryas crenulata Juz.--an amphi-Beringian species, in our area thus far known only eastwards

to the Mackenzie River (Porsild 1947).

Dryas hookeriana Juz.--a Cordilleran species with disjunct stations in the Mackenzie
Mountains, southwest Yukon and the Kenai Peninsula of Alaska (Porsild 1947, Cody and Porsild
1968).

Dryas octopetala L.--amphi-Beringian, reaching our area only in the Mackenzie and Richardson
mountains (Porsild 1947, Porsild and Cody 1968).

Dryas punctata Juz.--a circumpolar species with large gaps in distribution, which in our area

is rare in the Richardson and Mackenzie mountains (Porsild 1957, Cody et al in press).
Fragaria vesca L. var. americana (Porter) Staudt--a boreal North American species which is
found in Canada from Gaspé, Quebec to northern British Columbia, but with us known only from

Fort Simpson where it may possibly be introduced (Raup 1947).

Geum aleppicum Jacq. var. strictum (Ait.) Fern.--known in our area only from a few

collections along the Slave, Liard and upper Mackenzie rivers (Raup 1947, Cody 1963).

Geum glaciale Adams--an amphi-Beringian species which is rare in the Richardson and Mackenzie

mountains (Porsild 1943, Porsild and Cody 1968).

Geum rossii (R. Br.) Ser.--an amphi-Beringian species which in our area is known from only a

few alpine sites in the Mackenzie Mountains (Cody and Porsild 1968).

Geum triflorum Pursh--a prairie species which is found in our area only south of Great Slave
Lake (Thieret 1961).

Luetkea pectinata (Pursh) Ktze.--a British Columbia-Alaska-Yukon species which barely enters
the District of Mackenzie in the western parts of the Richardson and Mackenzie mountains
(Porsild 1943, Scotter and Cody 1974).

Potentilla arguta Pursh--a North American prairie species which with us is found along the
Slave River and about Great Slave Lake (Raup 1947, Thieret 1963a).

Potentilla biflora Willd.--an amphi-Beringian species which is found on alpine gravelly
slopes in the Richardson and Mackenzie mountains (Raup 1947, Scotter and Cody 1974, Porsild
and Cody 1968).

Potentilla diversifolia Lehm. ssp. glaucophylla Lehm.--a Cordilleran species found in our

area along the Liard River and in the southern Mackenzie Mountains (Raup 1947).

Potentilla egedii Wormskj.—--circumpolar, found only in the tidal zone of the Arctic Ocean and
Hudson Bay (Polunin 1940, Cody 1965a).

Potentilla elegans Cham. & Schl.--an amphi-Beringian species known with us from only a few

alpine stations in the Mackenzie Mountains (Raup 1947, Scotter and Cody 1974).

Potentilla pulchella R. Br.--a circumpolar, high-arctic species, with us known only from
along the Arctic Coast and Hudson Bay (Porsild 1943, Polunin 1940).

Potentilla rubricaulis Lehm.--with us known from along the Arctic Coast, Great Bear Lake,
central District of Keewatin and adjacent District of Mackenzie, and the Mackenzie and
Richardson mountains, but apparently nowhere common (Porsild 1943, 1957, Porsild and Cody
1968).

Potentilla tridentata Sol.--an eastern North American species which is found in sandy and

rocky situations south of Great Slave Lake (Cody 1956, Scotter 1966).
Potentilla uniflora Ledeb. (P. ledebouriana Porsild)--an amphi-Beringian--Cordilleran species

which is frequent in the Mackenzie and Richardson mountains and known also from the west end

of Great Bear Lake (Raup 1947, Porsild and Cody 1968).

Potentilla vahliana Lehm.--a high-arctic endemic of the Arctic Archipelago which is found
along the Arctic Coast and south to eastern Great Bear Lake and central District of Keewatin

(Porsild 1957).

Prunus pensylvanica L.--with us known only along river banks north to Fort Simpson (Raup
1947, Cody 1963, Scotter and Cody 1974).

Prunus virginiana L.--local along the Enterprise-Mackenzie Highway and in Nahanni National
Park (Thieret 1961, Scotter and Cody 1974).

Rosa blanda Ait.--known in our area only from along the Mackenzie River about latitude
63°N, an area which is disjunct by some 900 miles from the nearest locality in Alberta

(Porsild 1945).

Rosa woodsii Lindl.--river banks and lake shores along the Hay, Mackenzie and Liard rivers

north to vicinity of Wrigley (Raup 1947).
Rubus paracaulis Bailey--in our area known only from the vicinity of Hay River (Cody 1956).

Sanguisorba officinalis L.--a circumpolar species which in our area is known only in the
Mackenzie River Delta (Cody and Porsild 1968).

Sibbaldia procumbens L.--a circumpolar species (with several large gaps) which with us is
found in the Mackenzie and Richardson mountains, the west end of Great Bear Lake and several

stations in the District of Keewatin (Porsild 1943, Raup 1947).

Sorbus scopulina Greene--a Cordilleran species which barely enters southwestern District of

Mackenzie (Scotter and Cody 1974, Jeffrey 1961).

Spiraea beauverdiana Schneid.--an amphi-Beringian species found in our area in the Mackenzie

and Richardson mountains, and the Reindeer Grazing Preserve (Porsild 1943, Raup 1947).
LEGUMINOSAE

Astragalus aboriginum Richards.--a Cordilleran prairie and foothill species found
occasionally in the upper Mackenzie Basin north to Great Bear Lake (Raup 1947).

Astragalus agrestis Dougl. (A. goniatus Nutt.)--a prairie and foothill species which is rare
in the Mackenzie Valley north to near the Arctic Circle (Raup 1947, Cody 1956).

Astragalus americanus (Hook.) M.E. Jones--occasional about Great Slave Lake and northward
down the Mackenzie River to Norman Wells (Raup 1947, Cody 1960).

Astragalus canadensis L.--known in our area only from the valley of the Liard River (Scotter
and Cody 1974).

Astragalus richardsonii Sheldon--an endemic of northern District of Mackenzie and the western

islands of the Arctic Archipelago (Porsild 1957).

Astragalus striatus Nutt.--a western North American species which in our area occurs as far

north as near Fort Simpson, but has as yet only been collected a few times (Cody 1956).

Astragalus tenellus Pursh--a western North American species found occasionally northward
along the Mackenzie and its tributaries to about 67°30'N latitude (Raup 1947).

Astragalus umbellatus Bunge (A. frigidus (L.) Bunge var. littoralis (Hook.) Wats.--an
amphi-Beringian,arctic alpine species reaching into the District of Mackenzie in the

Richardson and Mackenzie mountains (Raup 1947).

Lathyrus japonicus Willd. var. aleuticus (Greene) Fern.--a circumpolar species which in our
area is known only from the Mackenzie Delta and Coronation Gulf regions (Cody 1954b, 1956a).

Lathyrus ochroleucus Hook.--a species of the southwestern lowlands of the District of
Mackenzie as far north as Wrigley (Raup 1947).

Oxytropis arctobia Bunge--endemic of the Arctic Archipelago and the Arctic Coast and rare
inland to Great Bear Lake (Polunin 1940, Porsild 1957).

Oxytropis bellii (Britt.) Palibine--an endemic of Northern Hudson Bay and central District of

Keewatin (Polunin 1940, Porsild 1957).

Oxytropis deflexa (Pall.) DC. var. foliolosa (Hook.) Barneby--a subarctic-alpine subspecies

which in our area is found on the Arctic Coast, Mackenzie Delta and Mackenzie Mountains (Cody

1954b).

Oxytropis deflexa (Pall.) DC. var. sericea T. & G. (O. retrorsa Fern.)--occasional in the
Mackenzie Valley north to Fort Norman (Cody 1956).

Oxytropis jordalii Porsild--an endemic of northern Alaska, Yukon, and the Mackenzie Mountains

in western District of Mackenzie (Scotter and Cody 1974).

Oxytropis nigrescens (Pall.) Fisch. ssp. bryophylla (Greene) Hult.--throughout Alaska, but
rare in the Yukon and Mackenzie and Richardson mountains of the District of Mackenzie (Cody
1978).

Oxytropis nigrescens (Pall.) Fisch. ssp. pygmaea (Fern.) Hult.--this amphi-Beringian
subspecies is found on the Arctic coasts of Alaska and in the Richardson and Mackenzie
mountains of the District of Mackenzie and the Mackenzie River Delta (Porsild 1943, Raup
1947).

Oxytropis scammaniana Hult.--the single locality in the central Mackenzie Mountains is
disjunct from the main range of the species in the Yukon Territory and Alaska (Cody and
Porsild 1968).

Oxytropis sheldonensis Porsild--known in our area from a single collection from the central
Mackenzie Mountains; it is a rare endemic of northwestern North America (Cody and Porsild

1968).

Oxytropis spicata (Hook.) Standl.--a Cordilleran foothill species barely reaching our area in
the upper Liard River region (Raup 1947).

GERANTACEAE

Geranium richardsonii Fisch. & Trautv.--a Cordilleran species known in our area only from hot

spring meadows in the southern Mackenzie Mountains (Scotter and Cody 1974).

CALLITRICHACEAE
Callitriche anceps Fern.--a North American species found from Newfoundland to Alaska, but as
yet known from only a single locality in southwestern District of Mackenzie (Cody and Porsild
1968).

B ALSAMINACEAE

Impatiens capensis Meerb.--a boreal American species known in our area only from the upper
Liard River valley (Jeffrey 1961).

ELATINACEAE

Elatine triandra Schk. s.l.--a western American-Eurasian species known in our area from a

single locality northwest of Yellowknife (Thieret 1963b).

CISTACEAE

Hudsonia tomentosa Nutt.--a boreal North American species known in our area only from sandy

situations on the north side of Great Slave Lake (Cody 1956).
VIOLACEAE

Viola epipsila Ledeb. ssp. repens (Turcz.) Becker--an amphi-Beringian species reaching the
Mackenzie River valley (Raup 1947).

Viola nephrophylla Greene--a boreal North American species which is of rare occurrence north
to Great Bear Lake (Thieret 1961).

Viola pallens (Banks) Brainerd--a boreal North American species of infrequent occurrence

north to Great Bear Lake (Porsild 1943).

Viola palustris L.--a circumpolar species known in our area only from southeastern District

of Mackenzie (Cody and Chilcott 1955).

Viola rugulosa Greene--a western North American species which enters our area only in the

Liard and South Nahanni river valleys (Jeffrey 1961, Scotter and Cody 1974).

Viola palustris L.--a circumpolar species known in our area only from southeastern District

of Mackenzie (Cody and Chilcott 1955).

Viola rugulosa Greene--a western North American species which enters our area only in the

Liard and south Nahanni river valleys (Jeffrey 1961, Scotter and Cody 1974).
ONAGRACEAE

Circaea alpina L.--a circumpolar species known in our area only from the upper Liard River
valley and by hotsprings in the southern Mackenzie Mountains (Jeffrey 1961, Scotter and Cody
1974).

Epilobium anagallidifolium Lam.--a circumpolar (with several gaps) subarctic-alpine species
found in our area only in the Mackenzie and Richardson mountains and at Great Bear Lake (Raup

1974).
Epilobium arcticum Samuelss. (E. davuricum Fisch. ex Hornem. var. arcticum (Samuelss.)

Polunin--an amphi-Atlantic species known from across the Arctic Archipelago, but in our area

only from the Hudson Bay Coast and the Richardson Mountains (Polunin 1940).

Epilobium ciliatum Raf. (E. glandulosum Lehm. var. perplexans (Trel.) Fern.)--a boreal
American species known in our area growing adjacent to hotsprings in the southwestern
Mackenzie Mountains (Porsild 1961).

Epilobium davuricum Fisch.--a subarctic, circumpolar species found in our area in central
District of Keewatin, about Great Bear Lake and extreme northwestern District of Mackenzie

(Porsild 1943).

Epilobium lactiflorum Haussk.--an arctic-alpine species known with us only in the Mackenzie
Mountains (Raup 1947).

Epilobium leptophyllum Raf.--a boreal North American Species known from a single collection
from the Liard River valley (Cody and Porsild 1968).

HALORAGACEAE
Hippuris montana Ledeb.--a far western North American species which is disjunct and rare in
the central Mackenzie Mountains where it is known from a single collection from Brintnell

Lake (Raup 1947).

Hippuris tetraphylla L.f.--a circumpolar littoral species found in our area on the Arctic
Coast and coast of Hudson Bay (Polunin 1940, Cody 1965a).

Myriophyllum alterniflorum DC.--amphi-Atlantic, known with us only from Great Bear Lake and
the Eskimo Lake Basin (Porsild 1943).

ARALIACEAE

Aralia nudicaulis L.--boreal North America, occurring as far north as Fort Simpson in the
District of Mackenzie (Cody 1956, Scotter and Cody 1974).

UMB ELLIFERAE

Bupleurum americanum Coult. & Rose--amphi-Beringian, extending through the Richardson
Mountains as far east as the Anderson River (Cody 1965a).

Cicuta bulbifera L.--boreal North America, rare and local in the Mackenzie Valley north to
Norman Wells (Cody 1960).

Cicuta maculata L. var. angustifolia Hook.--rare in the upper Mackenzie drainage north to
Fort Simpson (Cody 1963).

Coelpleurum gmelinii (DC.) Ledeb. (Angelica lucida sensu Hultén 1968)--this species is mainly
coastal amphi-Beringian but extends inland up the west flowing rivers into central Alaska and
is disjunct to the Itsi Range in eastern Yukon and extreme southwestern District of Mackenzie

at Pointed Mountain in the Liard Range.

Conioselinum cnidiifolium (Turcz.) Porsild--an amphi-Beringian species found in our area only

in northwestern District of Mackenzie (Cody 1965a).

Osmorhiza depauperata Phil. (0. obtusa (Coult. & Rose) Fern.)--a boreal North American
species, with us known only from the slopes of Mount Coty adjacent to the Liard River at Fort
Liard (Cody 1963).

CORNACEAE

Cornus suecica L.--known in our area from a single station north of the east arm of Great

Slave Lake (Cody and Porsild 1968).

PYROLACEAE

Chimaphila umbellata (L.) Bart. var. occidentalis (Rydb.) Blake--Fort Smith, Webber, 23 July
1978 (DAO). New to the Continental Northwest Territories. The species is circumpolar; var.
occidentalis occurs from Alaska east to Manitoba and south into the western United States; it
barely enters the District of Mackenzie along the Slave River overlooking the Rapids of the

Drowned.

ERICACEAE
Cassiope hypnoides (L.) D. Don--an amphi-Atlantic species which has been found on the
Keewatin coast of Hudson Bay and in the Thelon Game Sanctuary in eastern District of
Mackenzie (Porsild 1943).
Cassiope tetragona (L.) D. Don ssp. saximontana (Small) Porsild--this is a Cordilleran

subspecies of the circumpolar C. tetragona, which enters the District of Mackenzie in the
southern Mackenzie Mountains (Raup 1947, Scotter and Cody 1974).

Oxycoccus quadripetalus Gil. (Vaccinium oxycoccus L.)--circumpolar, thus far known only from
muskegs and shores adjacent to the Liard and upper Mackenzie rivers (Cody 1960).

Phyllodoce coerulea (L.) Bab.--a circumpolar, (with large gaps), arctic-alpine species which
in our area is known from the barren grounds between Hudson Bay and longitude 11200 (Cody

1953, Porsild 1943).

Phyllodoce empetriformis (Sm.) D. Don--Cordilleran, entering our area in the southern and
western parts of the Mackenzie Mountains (Raup 1947).

Phyllodoce glandulifera (Hook.) Cov.--a Cordilleran-Pacific Coast species known in our area
only from the southwestern Mackenzie Mountains (Raup 1947).

Vaccinium caespitosum Michx.--a boreal North American species known from a single collection
on the west slope of the Liard Range of the Mackenzie Mountains (Jeffrey 1961).

Vaccinium membranaceum Dougl.--a Cordilleran, woodland species which like the previous
species is known from a single collection from the west slope of the Liard Range of the

Mackenzie Mountains (Jeffrey 1961).

Vaccinium myrtilloides Michx.--a boreal North American species which barely enters our area
on the Pre-Cambrian Shield south of Great Slave Lake (Cody 1956).

DIAPENSIACEAE

Diapensia lapponica L.--an amphi-Atlantic species found on the barren grounds between Hudson
Bay and longitude 108°W (Porsild 1943).

Diapensia obovata (Fr. Schm.) Nakai--amphi-Beringian, arctic-alpine, frequent in Alaska, but
rare in the Richardson Mountains and southern Mackenzie Mountains (Porsild 1943, Scotter and
Cody 1974).

PRIMULACEAE

Dodecatheon frigidum C. & S.--amphi-Beringian, barely entering the District of Mackenzie in
the Richardson and Mackenzie mountains (Cody and Porsild 1968).

Dodecatheon pulchellum (Raf.) Merr. ssp. pauciflorum (Greene) Hult.--wet meadows and saline
flats in southwestern District of Mackenzie (Raup 1947).

Douglasia arctica Hook.--endemic of Alaska, Yukon Territory and the Richardson Mountains of
the District of Mackenzie (Porsild 1943).

Glaux maritima L. var. obtusifolia Fern.--a circumpolar species (with large gaps), which in
our area is common on the Salt Plain west of Fort Smith and rare in saline seepage areas

along the lower Slave and upper Mackenzie rivers (Raup 1947).

Primula borealis Duby--moist saline meadows along the Arctic Coast east to longitude 130°W
(Cody 1956a).

Primula incana M.E. Jones--meadows, wet clearings and lake shores about Great Slave Lake and

rare down the Mackenzie River to latitude 66°N (Raup 1947).

Primula tschuktschorum Kjellm. ssp. cairnesiana Porsild--this subspecies is endemic to
eastern Alaska and the Richardson Mountains adjacent to the Yukon-Mackenzie border (Porsild

1966b).

Trientalis europaea L. ssp. arctica (Fisch.) Hult.--an amphi-Beringian species in our area
found only near the west end of Great Slave Lake (Raup 1947).

PLUMB AGINACEAE

Armeria maritima (Mill.) Willd. ssp. arctica (Cham.) Hult.--this subspecies of the
circumpolar A. maritima, is amphi-Beringian, and is found in our area only along the Arctic

Coast as far east as Bernard Harbour (Cody 1965a).
GENTIANACEAE

Gentiana affinis Griseb.--in the District of Mackenzie known from a McTavish specimen
collected in 1856 labelled “immediate vicinity, of Fort Good Hope”, but recently collected on
gravel bars of the Keele River in the Mackenzie Mountains and near Heart Lake in the
southwest, widely disjunct from the main range south of the South Saskatchewan River (Cody

and Porsild 1968, Cody and Talbot 1978).

Gentiana glauca Pall.--an amphi-Beringian species which is found in moist alpine meadows in

the Mackenzie and Richardson mountains (Raup 1947, Porsild 1943).
Gentiana macounii Holm--rare and local on gravelly beaches in the upper Mackenzie Valley

where it is widely disjunct from the main range south of the Saskatchewan River (Thieret

1961).

Gentiana prostrata Haenke--amphi-Beringian, extending across Alaska and the Yukon Territory
into the Richardson and Mackenzie mountains of the District of Mackenzie (Jeffrey 1961,
Porsild and Cody 1968).

Gentiana raupii Porsild--an endemic of the Mackenzie River Basin (Porsild 1943).

Gentiana richardsonii Porsild--endemic of the Arctic Coast of the District of Mackenzie and
Kotzebue Sound, Alaska (Porsild 1951, G. ? detonsa sensu Porsild 1943).

Gentiana tenella Rottb.--circumpolar with many disjunct populations, found in our area on the

coast of Coronation Gulf and the shores of Hudson Bay (Savile and Calder 1952, Cody 1954b).
Lomatogonium rotatum (L.) Fries ssp. rotatum (Pleurogyne rotata and P. carinata sensu Macoun
& Holm)--the typical subspecies is found along the Arctic Coast of the District of Mackenzie,

Great Bear Lake, and the Hudson Bay shore (Macoun and Holm 1921, Polunin 1940).

Lomatogonium rotatum (L.) Fries ssp. tenuifolium (Griseb.) Porsild--with us found in the
upper Mackenzie River basin (Porsild 1966a).

APOCYNACEAE

Apocynum androsaemifolium L.-~-sandy woods and dry river banks in the upper Mackenzie drainage
(Raup 1947, Cody 1963).

Apocynum sibiricum Jacq.--in our area known only from exposed river banks at Hay River and

Fort Simpson (Raup 1947, Cody 1956).

POLEMONIACEAE
Collomia linearis Nutt.--a North American species known in Canada from New Brunswick to
British Columbia, which in our area is found in townsites and other disturbed situations,
where it may be introduced (Raup 1947).
Phlox alaskensis Jordal (P. sibirica sensu Porsild and Cody 1968)--endemic of Alaska, Yukon
Territory and the Richardson Mountains of northwestern District of Mackenzie (P. richardsonii

sensu Porsild 1943).

Phlox richardsonii Hook.--endemic of northwest Alaska, northern Yukon, the Arctic Coast of

the District of Mackenzie and Banks Island (Hooker 1838).

Polemonium boreale Adams--amphi-Beringian eastward to the Mackenzie and Richardson mountains

and along the Arctic Coast to about longitude 117°w (Raup 1947, Cody 1965a).

Polemonium pulcherrimum Hook.--a western North American species found in our area in the
Mackenzie and Richardson mountains and east to the Anderson River and Great Bear Lake
(Porsild 1943).

HYDROPHYLLACEAE

Hydrophyllum franklinii (R. Br.) Gray--a western North American species found in dry sandy or
disturbed situations about Great Slave Lake and rare at Great Bear Lake (Raup 1947).

BORAGINACEAE

Eritrichium splendens Kearney--an endemic of Alaska, northern Yukon, and the Richardson

Mountains of northwestern District of Mackenzie (Cody and Porsild 1968).

Hackelia americana (A. Gray) Fern.--a North American species which in Canada is found from
Quebec to British Columbia, north into southern District of Mackenzie along the Slave and

Mackenzie rivers as far as Fort Simpson (Cody 1956).

Mertensia drummondii (Lehm.) G. Don--endemic to the Arctic Coast of the District of
Mackenzie, southern Victoria Island, and northwestern Alaska, but not a sea shore species

(Hooker 1838).

Mertensia maritima (L.) S.F. Gray--restricted to the sea beaches of Hudson Bay and the Arctic
Coast (Polunin 1940, Hooker 1838).

Mertensia paniculata (Ait.) G. Don var. alaskana (Britt.) Williams--a northwestern endemic
variety of the boreal M. paniculata which is known in our area from a single collection in
the Mackenzie Mountains (Cody and Porsild 1968).

Myosotis alpestris Schm. ssp. asiatica Vestergr.--an amphi-Beringian species which extends
into the Mackenzie Mountains, Richardson Mountains and the Caribou Hills on the east side of
the Mackenzie River Delta (Raup 1947, Cody 1965a).

LAB IATAE
Agastache foeniculum (Pursh) Ktze.--a North American plains species which is rare in the

District of Mackenzie where it is known from only two early collections from Resolution and

the Mackenzie River (Raup 1947).

Lycopus uniflorus Michx.--rare in the Pre-Cambrian Shield area south of Great Slave Lake
(Scotter 1966).

Physostegia parviflora Nutt.--in Canada this species is found from Manitoba to British
Columbia, and barely enters the District of Mackenzie along the Salt River west of Fort Smith
(Cody 1956).

SCROPHULARIACEAE

Castilleja hyperborea Pennell--amphi-Beringian, extending eastward to the Mackenzie and
Richardson mountains, and along the Arctic Coast to Cape Parry (Porsild 1943, Porsild and
Cody 1968).

Castilleja yukonis Pennell--an endemic of central interior Alaska, southwestern Yukon

Territory, and the Mackenzie River Delta in northwestern District of Mackenzie (Cody 1978).

Euphrasia arctica Lge.--an amphi-Atlantic species found in our area only at the mouth of the
McConnell River on the Hudson Bay shore of the District of Keewatin (Cody and Porsild 1968).

Euphrasia subarctica Raup--a western North American species known in the District of
Mackenzie from only a few widely separated localities north to Great Bear Lake (Raup 1947,
Porsild and Cody 1968).

Lagotis stelleri (Cham. & Schlecht.) Rupr.--amphi-Beringian, barely reaching the District of
Mackenzie in the Mackenzie and Richardson mountains (Porsild 1943, Cody 1978).

Limosella aquatica L.--a circumpolar species thus far known in our area only from McTavish
Bay of Great Bear Lake and the west coast of Hudson Bay (Porsild 1943, Porsild and Cody

1968).

Mimulus guttatus DC.--a western North American species which is found in our area only by hot

springs in the southern Mackenzie Mountains (Scotter and Cody 1974).

Orthocarpus luteus Nutt.--in Canada found from Manitoba to British Columbia and north to
latitude 60°30'N. on the Slave River (Cody 1978).

Pedicularis flammea L.--an amphi-Atlantic species known from a few collections across the

District of Keewatin and eastern District of Mackenzie to Great Bear Lake (Porsild 1943).

Pedicularis hirsuta L.--an amphi-Atlantic species known in our area from the Hudson Bay coast

of the District of Keewatin and Queen Maud Gulf on the Arctic Coast (Porsild 1943, 1957).

Pedicularis oederi Retz.--an amphi-Beringian species, barely entering our area in the

Richardson Mountains adjacent to the Yukon border (Cody and Porsild 1968).

Pedicularis parviflora J.E. Smith--in our area known only from the mouth of the McConnell
River on the Hudson Bay coast, and from near the west end of Great Slave Lake in the District
of Mackenzie (Cody and Porsild 1968, Cody and Talbot 1978).

Pedicularis verticillata L.--amphi-Beringian, found in our area only in the Richardson

Mountains (Porsild 1951).

Penstemon gormanii Greene--an endemic of central Alaska, Yukon Territory, and the Mackenzie

Mountains of the District of Mackenzie adjacent to the Yukon border (Cody and Porsild 1968).

Synthyris borealis Pennell--an endemic of central Alaska, Yukon Territory and the Richardson
Mountains of northwestern District of Mackenzie adjacent to the Yukon border (Cody and
Porsild 1968).

Veronica americana Schwein.--in our area known only from about hot springs in the southern

Mackenzie Mountains (Scotter and Cody 1974).

Veronica peregrina L. var. xalapensis (HBK.) St. John & Warren--in our area known from only a

few collections north to Fort Simpson (Raup 1947).

Veronica scutellata L.--a circumpolar species found in our area only in southwestern District

of Mackenzie (Raup 1947, Thieret 1963a).

Veronica wormskjoldii Roem. & Schult. ssp. wormskjoldii (V. alpina var. unalaschcensis Cham.
& Schlecht.)--in our area found in the western parts of the Mackenzie and Richardson
mountains, western Great Bear Lake and rare in eastern District of Mackenzie and southern

district of Keewatin (Porsild 1943, Raup 1947).
Veronica wormskjoldii Roem. & Schult. ssp. alterniflora (Fern.) Pennell (V. alpina var.

alterniflora Fern).--a Cordilleran alpine subspecies barely entering our area in the central

Mackenzie Mountains (Raup 1947).

LENTIB ULARIACEAE

Utricularia minor L.--circumpolar, known from a few scattered collections north to Great Bear

Lake (Raup 1947, Cody 1956).

Utricularia ochroleuca Hartm.--circumpolar, known only from the Mackenzie Basin (Porsild
1943).

PLANTAGINACEAE
Plantago eriopoda Torr.--a North American species found north along the Mackenzie River to
the Delta, where it is apparently restricted to saline situations (Porsild 1943, Raup 1947,
Cody 1978).
Plantago juncoides Lam. var. glauca (Hornem.) Fern.--an amphi-Atlantic taxon of sea-beaches
and saline springs, known in our area only from the east end of Great Bear Lake (Porsild
1943).

RUB IACEAE

Galium brandegei Gray--an eastern sub-arctic alpine species reaching our area on the west

coast of Hudson Bay (Cody and Porsild 1968).

Galium kamtshaticum Steller--eastern Asia, coastal Alaska and disjunct to the Mackenzie Delta

and several stations in eastern North America (Cody and Porsild 1968).
Galium labradoricum Wieg.--Newfoundland to Alberta, north beyond 60°N in central District
of Keewatin, and to Great Slave Lake in the District of Mackenzie (Jeffrey 1961, Theiret

1963a).

Galium tinctorium L. var. subbiflorum (Wieg.) Fern.--boreal North American barely entering
the District of Mackenzie south of Great Slave Lake (Cody and Porsild 1968).

Galium triflorum Michx.--circumpolar, entering the District of Mackenzie in the Slave and
Liard river valleys (Cody 1961).

CAPRIFOLIACEAE

Lonicera dioica L. var. glaucescens (Rydb.) Butters--a North American species extending north
in our area to Great Slave Lake and Fort Simpson (Raup 1947).

Symphoricarpos albus (L.) Blake--a North American species which extends only slightly north
of 60°N latitude near Fort Smith (Raup 1947).

Symphoricarpos occidentalis Hook.--a North American species which in Canada is found from
Ontario to British Columbia, north to Great Slave Lake and Fort Simpson (Raup 1947, Cody
1961).

ADOXACEAE

Adoxa moschatellina L.--a circumpolar species (with large gaps) known in our area only from

the upper Liard River (Jeffrey 1961).
VALERIANACEAE

Valeriana capitata Pall.--amphi-Beringian, found in our area in the Mackenzie and Richardson
mountains and the Mackenzie River Delta (Porsild 1943, Cody 1965a).

Valeriana septentrionalis Rydb.--a North American species rare and local in the upper
Mackenzie drainage north to Great Bear Lake (Porsild 1943).

Valeriana sitchensis Bong.--a Cordilleran species barely entering the District of Mackenzie

on the east slope of the Mackenzie Mountains (Porsild 1945).
CAMPANULACEAE

Campanula aurita Greene--an endemic of interior Alaska, the Yukon Territory and Mackenzie
Mountains in western District of Mackenzie (Raup 1947).

Campanula lasiocarpa Cham.--east Asia and western North America, entering our area in the
Mackenzie Mountains (Raup 1947).

Campanula rotundifolia L.--circumpolar (with large gaps), found in our area in southwestern

District of Mackenzie, north down the Mackenzie River to near Norman Wells (Raup 1947).
LOB ELIACEAE

0 o
Lobelia dortmanna L.--S.W. of Abitau lake, 60 22'N, 107 19'W, Ovenden & Rowe 776 (DAO).
New to the Continental Northwest Territories. An amphi-Atlantic species which is of rare
occurrence in western Canada. The collection cited here extends the known range northward

from Lake Athabaska in northern Saskatchewan.

Lobelia kalmii L.--a North American species found in Canada from Newfoundland to the interior
of British Columbia north in the District of Mackenzie to just beyond Fort Simpson (Raup
1947).

COMPOSITAE

oseris aurantiaca (Hook.) Greene--a Cordilleran species found in our area only adjacent to
the Yukon border (Cody and Porsild 1968).

Agoseris glauca (Pursh) Raf. ssp. scorzoneraefolia (Schrad.) Piper--a North American species
found in our area on the Salt Plain west of Fort Smith and disjunct to the Caribou Hills on
the east side of the Mackenzie River Delta and similar situations along the Anderson River to
the east (Cody 1963).

Anaphalis margaritacea (L.) Benth. & Hook. var. subalpina Gray--a western variety, found in

our area only in the southern Mackenzie Mountains (Porsild 1961).

Antennaria alborosea Porsild--central Alaska to the Mackenzie Mountains and Great Bear Lake
(Porsild 1950).

Antennaria campestris Rydb.--plains and prairies north to Great Slave Lake and near Fort
Simpson on the Mackenzie River (Porsild 1950).

Antennaria canescens (Lge.) Malte--an eastern subarctic North American species found in

central District of Keewatin and the north side of Great Slave Lake (Porsild 1965).

Antennaria crymophila Porsild--in our area known only from the type locality on the Caribou
Hills on the east side of the Mackenzie River Delta (Porsild 1943).

Antennaria densifolia Porsild--an endemic of the Mackenzie Mountains in southwestern District

of Mackenzie and the mountains of central Yukon (Porsild 1950).

Antennaria elegans Porsild--mountains of southeast and central Yukon and northern British
Columbia and disjunct to Great Bear Lake and the east end of Great Slave Lake (Porsild
1950).

Antennaria glabrata (J. Vahl) Greene--central west Greenland and southern Baffin Island with
disjunct stations near Wager Bay, northeast of Great Slave Lake, and the high peaks of the

southern Canadian Rocky Mountains (Porsild 1965).

Antennaria monocephala DC.--an amphi-Beringian species reaching our area in the Richardson
and Mackenzie mountains (Porsild 1950).

Antennaria neoalaskana Porsild--an endemic from the eastern Brooks Range, Alaska, south over

the Richardson Mountains to the central Mackenzie Mountains (Porsild 1950).

Antennaria philonipha Porsild--an endemic of Alaska, Yukon, Mackenzie and Richardson

mountains east to the Anderson River (Porsild 1950).

Antennaria pygmaea Fern.--an arctic-alpine species known in our area from central District of

Keewatin, Great Bear Lake, and the Mackenzie River Delta (Porsild 1965).

Antennaria stolonifera Porsild--an endemic of central Alaska, central and southeastern Yukon,
and the western parts of the Mackenzie Mountains in the District of Mackenzie (Porsild
1950).

Antennaria subcanescens Ostenf.--an arctic species found occasionally along the Arctic Coast

of the District of Mackenzie and District of Keewatin (Porsild 1965).

Antennaria subviscosa Fern.--southwestern Mackenzie Mountains and southern Yukon, disjunct to

Lake Athabaska, Lake Superior and eastern Canada (Porsild 1950).

Antennaria ungavensis (Fern.) Malte--an endemic of northern Ungava, Keewatin and the southern
Canadian Rocky Mountains (Porsild 1965).

Arnica amplexicaulis Nutt.--a Cordilleran-Pacific Coast species known in our area from only

two stations on the east slope of the Mackenzie Mountains (Porsild 1961).

Arnica chamissonis Less. ssp. foliosa (Nutt.) Maguire--a western North American species found
in Canada from James Bay to the southern Yukon Territory, and known in our area only from

southwestern District of Mackenzie (Raup 1947, Thieret 1963a, Scotter and Cody 1974).

Arnica chamissonis Less. ssp. incana (Gray) Maguire--in our area in the lower Slave and upper

Mackenzie valleys, thence southward to California (Maguire 1943).

Arnica cordifolia Hook.--a Cordilleran species barely entering our area along the lower Liard

and adjacent mountainsides (Raup 1947, Jeffery 1961).
Arnica latifolia Bong.--a Cordilleran-Pacific Coast species barely crossing the

Mackenzie-Yukon watershed in MacMillan Pass and the upper Flat River (Cody and Porsild
1968).

Arnica lessingii Greene--amphi-Beringian, reaching our area in the Richardson and Mackenzie
mountains (Raup 1947, Porsild 1943).

Arnica mollis Hook.--a Cordilleran species, rare in the northern part of its range and with

us known only from the southwestern Mackenzie Mountains (Raup 1947).

Artemisia alaskana Rydb.--an endemic of Alaska, Yukon and the Richardson Mountains of

northwestern District of Mackenzie (Cody and Porsild 1968).

Artemisia arctica Less. ssp. arctica--amphi-Beringian, reaching our area in the Mackenzie and

Richardson mountains (Raup 1947, Porsild 1943).

Artemisia hyperborea Rydb.--an endemic of northwestern North America, in our area known from
the East Branch of the Mackenzie Delta, the Arctic Coast, Great Bear Lake, and the southern

Mackenzie Mountains (Porsild 1943, Cody et al in press).

Artemisia ludoviciana Nutt. var. gnaphalodes (Nutt.) T. & G.--a North American prairie and
open woodland species barely entering the District of Mackenzie south of Fort Smith (Cody
1956).

Artemisia richardsoniana Bess.--an endemic of Northwestern North America, in our area found

only along the Arctic Coast of the District of Mackenzie (Porsild 1943).
Aster alpinus ssp. vierhapperi Onno--Cordilleran, in our area along the Mackenzie River and
its tributaries from Great Slave Lake north to the east slope of the Richardson Mountains

(Porsild 1943, Raup 1947).

Aster brachyactis Blake (A. angustus (Lindl.) T. & G.)--a boreal North American species found
in our area only about Great Slave Lake (Cody 1956).

Aster falcatus Lindl.--a western prairie species barely entering the District of Mackenzie

adjacent to the Slave River (Raup 1947 pro parte).

Aster franklinianus Rydb.--a western prairie species found in our area north to Great Slave

Lake and Fort Simpson on the Mackenzie River.

Aster nahanniensis Cody--an endemic of the Mackenzie Mountains of western District of

Mackenzie where it is found by hot springs (Scotter and Cody 1974).

Aster pauciflorus Cronq.--a North American prairie and foothills species entering the
District of Mackenzie only on the Salt Plain west of Fort Smith (Cody 1956).

Aster pygmaeus Lindl.--an endemic to the western Arctic Archipelago and adjacent mainland of
the District of Mackenzie (Hooker 1834).

Aster spathulatus Lindl.--an endemic of the central Mackenzie River drainage (Raup 1947).

Aster yukonensis Cronq.--a rare endemic of northwestern North America known in our area from
one locality in the central Mackenzie Mountains, and another in the Mackenzie River valley

near Norman Wells (Cody 1978).

Bidens cernua L.--circumpolar, in our area known north to Great Slave lake and Fort Simpson

on the Upper Mackenzie River (Cody 1956, Thieret 1963a).

Chrysanthemum arcticum L.--circumpolar, in our area found along the Arctic Coast east of the
Mackenzie Delta, and on the shores of Hudson Bay (Porsild 1943, Polunin 1940).

Cirsium drummondii T. & G.--a North American prairie species found in Canada from
northwestern Ontario to eastern British Columbia, north into the District of Mackenzie along

the Slave River and with an early record “to the Bear River” (Raup 1947).

Cirsium foliosum (Hook.) DC.--British Columbia and Alberta north in our area to the lower
Slave River (Cody and Porsild 1968).

Crepis elegans Hook.--a western North American species found occasionally north along the

Mackenzie River and its tributaries to the Arctic Coast (Raup 1947).
Erigeron acris L. var debilis Gray (E. jucundus Greene)--a Cordilleran variety barely
entering our area in the Mackenzie Mountains of southwestern District of Mackenzie (Raup

1947).

Erigeron grandiflorus Hook. ssp. arcticus Porsild--rare in central Alaska, Yukon,

northwestern District of Mackenzie and western Victoria Island (Porsild 1974).

Erigeron pallens Cronq.--our stations in the central Mackenzie Mountains are disjunct from
alpine stations in the mountains of southwestern Alberta (Cody and Porsild 1968).

Erigeron philadelphicus L.--a wide ranging boreal species found with us along the Slave,
Liard and Mackenzie rivers north to latitude 63°N (Raup 1947).

Erigeron purpuratus Greene--an endemic of northern British Columbia, Alaska, Yukon, and the
Mackenzie Mountains of the District of Mackenzie (Cody and Porsild 1968).

Erigeron yukonensis Rydb.--an endemic of central Yukon, the southern Mackenzie Mountains,

Mackenzie Delta and Arctic Coast east to Coronation Gulf (Porsild 1974).

Grindelia squarrosa (Pursh) Dunal--a North American prairie and foothill species barely

entering the District of Mackenzie south of Great Slave Lake (Raup 1947).

Haplopappus uniflorus (Hook.) T. & G. (H. lanceolatus (Hook.) T. & G. var. sublanatus
Cody)--a western priaire foothill species barely entering the District of Mackenzie on the

Salt Plain west of Fort Smith (Cody 1956).

Helenium autumnale L. var. grandiflorum (Nutt.) T. & G.--meadows and streambanks north to
Fort Simpson (Raup 1947, Cody 1956).

Hieracium albiflorum Hook.--Cordilleran, known in our area only from the southern Mackenzie

Mountains (Porsild 1961).

Hieracium gracile Hook.--Cordilleran, extending across the Mackenzie Mountains to Great Bear
Lake (Raup 1947).

Hieracium triste Willd.--a Beringian and mainly coastal species found in alpine situations in
central Yukon and in the Mackenzie Mountains of the District of Mackenzie adjacent to the

Yukon border (Cody and Porsild 1968).

Petasites arcticus Porsild--an endemic to the Mackenzie Delta region south along the east

slope of the Richardson and Mackenzie mountains (Porsild 1943, Scotter and Cody 1974).

Petasites hyperboreus Rydb.--a Cordilleran-Pacific Coast species barely entering the District
of Mackenzie along the Yukon-Mackenzie divide (Cody and Porsild 1968).

Petasites vitifolius Greene--a North American species found in Canada from Labrador to the
Yukon Territory, but barely entering our area in the southern parts of the Districts of

Keewatin and Mackenzie (Raup 1947).

Saussurea angustifolia (Willd.) DC. var yukonensis Porsild--var. yukonensis of the
circumpolar S. angustifolia, is endemic to Alaska, Yukon and the Mackenzie Mountains of the
District of Mackenzie (Porsild 1945).

Senecio eremophilus Richards.--a western species barely entering the District of Mackenzie
north of Fort Smith (Cody 1956).

Senecio hyperborealis Greenm.--an endemic of Alaska, Yukon east through the Mackenzie and
Richardson mountains to Great Bear Lake and Banks Island (Raup 1947).

Senecio kjellmanii Porsild--an endemic of arctic-alpine northwest America and east Asia,
found in our area in the Mackenzie Mountains (Raup 1947).

Senecio lindstroemii (Ostf.) Porsild--an endemic of Alaska, Yukon, and the Richardson and

northern Mackenzie mountains of the District of Mackenzie (Raup 1947, Porsild 1943).

Senecio pauciflorus Pursh--a North American species found from Newfoundland to British
Columbia and Alaska, but barely entering our area in southwest District of Mackenzie (Cody

and Porsild 1968).

Senecio cymbalaria Pursh (S. resedifolius Less.)--amphi-Beringian, entering the District of
Mackenzie in the Richardson and Mackenzie mountains, and disjunct to Gaspé and southwestern

Newfoundland (Porsild 1943, Raup 1947).

Senecio sheldonensis Porsild--an endemic of Central Yukon south to northern British Columbia

and rare in the Mackenzie Mountains of the District of Mackenzie (Cody and Porsild 1968).

Senecio triangularis Hook.--a Cordilleran species, entering the District of Mackenzie in the
Mackenzie Mountains (Raup 1947, Scotter and Cody 1974).

Senecio yukonensis Porsild--an endemic of Alaska, Yukon and the Richardson and Mackenzie
mountains of the District of Mackenzie (Porsild 1951, Scotter and Cody 1974).

Solidago graminifolia (L.) Salisb. var. major (Michx.) Fern.--a western American variety

known in our area only from the vicinity of Fort Simpson (Raup 1947).

Tanacetum huronense Nutt.--a North American species known from Newfoundland to Alaska, but
thus far found only at a single station in the Mackenzie Delta in the District of Mackenzie
(Raup 1947).

Taraxacum alaskanum Rydb.--a northwestern North American species, known in our area from the

°
Mackenzie and Richardson mountains, and along the Arctic Coast east to longitude 125 W.

(Porsild 1943, Raup 1947).

Si!

Taraxacum dumetorum Greene--a western species found from James Bay to the Yukon Territory,
entering the District of Mackenzie in the southwest and disjunct to the Mackenzie Delta
(Jeffrey 1961).

Taraxacum hyperboreum Dahlst.--a Canadian arctic species found in our area along the Arctic
Coast and about Great Bear Lake (Haglund 1943).

Taraxacum integratum Hagl.--an endemic of Alaska, central Yukon, Mackenzie Delta and Great
Bear Lake (Cody and Porsild 1968).

Taraxacum lapponicum Kihlm.--an amphi-Atlantic species found in our area in eastern District
of Mackenzie and at Brintnell Lake in the Mackenzie Mountains (Raup 1947).

Taraxacum mackenziense Porsild--an endemic of the lower Mackenzie River valley (Porsild
1974).

Taraxacum maurolepium Hagl.--endemic to Alaska, Yukon and the Mackenzie Mountains and
Mackenzie River Delta region in western District of Mackenzie (Haglund 1949).

Taraxacum pellianum Porsild--an endemic of the Yukon, Mackenzie Mountains and the lower
Mackenzie River valley (Cody and Porsild 1968).

Taraxacum phymatocarpum J. Vahl--a North American arctic species, found in our area only
along the Arctic Coast and in the Richardson Mountains (Porsild 1957).

Taraxacum pseudonorvegicum Dahlst.--an eastern endemic thus far known only from southwestern
Baffin Island, and in the District of Keewatin from Chesterfield Inlet to the upper Thelon

River (Haglund 1943).

Taraxacum pumilum Dahlst.--a high arctic species known in our area only from the Arctic Coast
west to the Mackenzie Delta (Cody 1978).

Taraxacum sibiricum Dahlst.--amphi-Beringian, ranging across Alaska and Yukon to the

Mackenzie Mountains of western District of Mackenzie (Porsild 1974).

REFERENCES

Bassett, I. J. and C. W. Crompton. 1973.
The genus Atriplex (Chenopodiaceae) in Canada and Alaska. III. Three hexaploid annuals:
A. subspicata, A. gmelinii and A. alaskensis. Canadian Journal of Botany 51:
1715-1723.

Bassett, I. J. and C. W. Crompton. 1978. The genus Suaeda (Chenopodiaceae) in Canada.
Canadian Journal of Botany 56: 581-591.

Bowden, W. M. 1960.
Chromosome numbers and taxonomic notes on northern grasses. Canadian Journal of Botany
S8 Wiles

Bowden, W. M. and W. J. Cody. 1961.
Recognition of Elymus sibiricus L. from Alaska and the District of Mackenzie. Bulletin
of the Torrey Botanical Club 88: 153-155.

Cody, W. J. 1953.
Phyllodoce coerulea in North America. Canadian Field-Naturalist 67: 131-134.

Cody, W. J. 1954a.
A history of Tillaea aquatica (Crassulaceae) in Canada and Alaska. Rhodora 56:
96-101.

Cody, W. J. 1954b.
Plant records from Coppermine, Mackenzie District, N.W.T. Canadian Field-Naturalist 68:
110-117.

Cody, W. J. 1956.
New plant records for northern Alberta and southern Mackenzie District. Canadian
Field-Naturalist 70: 101-130.

Cody, W. J. 1960.
Plants of the vicinity of Norman Wells, Mackenzie District, Northwest Territories.
Canadian Field-Naturalist 74: 71-100.

Cody, W. J. 1961.
New plant records from the upper Mackenzie River valley, Mackenzie District, Northwest
Territories. Canadian Field-Naturalist 75: 55-69.

Cody, W. J. 1963.
A contribution to the knowledge of the flora of southwestern Mackenzie District.
Canadian Field-Naturalist 77: 108-123.

Cody, W. J. 1965a.
Plants of the Mackenzie River Delta and Reindeer Grazing Preserve. Plant Research
Institute, Canada Agriculture, Ottawa. 56pp.

Cody, W. J. 1965b.
New plant records from northwestern Mackenzie District, N.W.T. Canadian Field-Naturalist
79: 96-106.

Cody, W. J. 1967.
Elymus sibiricus (Gramineae) new to British Columbia. Canadian Field-Naturalist 81:
275-276.
Cody, W. J. 1971.
A phytogeographic study of the floras of the continental Northwest Territories and
Yukon. Naturaliste canadien 98: 145-158.
Cody W. J. 1975.
Scheuchzeria palustris L. (Scheuchzeriaceae) in Northwestern North America. Canadian
Field-Naturalist 89: 69-71.
Cody, We J. 1978).
Range extensions and comments on the vascular flora of the Continental Northwest
Territories. Canadian Field-Naturalist 92: 144-150.
Cody.) Wen JiemandeJiemGe Chilcott = 1955:
Plant collections from Matthews and Muskox lakes, Mackenzie District, N.W.T. Canadian
Field-Naturalist 69: 153-162.
Cody, W. J. and A. E. Porsild. 1967.
Potamogeton illinoensis, new to Mackenzie District. Blue Jay 25: 28-29.
Cody, W. J. and A. E. Porsild. 1968.
Additions to the flora of Continental Northwest Territories, Canada. Canadian
Field-Naturalist 82: 263-275.
Cody, W. J., G. W. Scotter and S. S. Talbot. (In press)
Additions to the vascular plant flora of Nahanni National Park, Northwest Territories...
Cody, W. J. and S. S. Talbot. 1973.
The pitcher plant, Sarracenia purpurea L. in the northwestern part of its range.
Canadian Field-Naturalist 87: 318-320.
Cody, W. J. and S. S. Talbot. 1978. Vascular plant range extensions to the Heart Lake area,
District of Mackenzie, Northwest Territories. Canadian Field-Naturalist 92: 137-143.
Haglund, G. 1943.
Taraxacum in Arctic Canada. Rhodora 45: 337-343.
Haglund, G. 1949.
Supplementary notes on the Taraxacum flora of Alaska and Yukon. Svensk Botanisk
Tidsskrife 43: "107-116"
Hooker, W. J. 1829-40.
Flora Boreali-Americana, London.
Hultén, E. 1940.
Two species of Salix from Alaska. Svensk Botanisk Tidsskrift 34: 73-76.
Hultén, E. 1941-50.
Flora of Alaska and Yukon. Lunds Universitets Arsskrift, Lund.
Hultén, E. 1968.
Flora of Alaska and neighboring territories. Stanford University Press. Stanford 1008pp.

Jeffrey, W. W. 1961.
Notes on plant occurrence along lower Liard River, N.W.T. National Museum of Canada
Bulletin 171: 32-115.

Knaben, G. 1959.
On the evolution of the Radicatum-Group of the Scapiflora Papavers as studied in 70 and
56 chromosome species. Opera Botanica 3: 3: 1-96.

Macoun, J. M. and Th. Holm. 1921.
Vascular Plants. Report of the Canadian Arctic Expedition 1913-1918. 5 (A): 1-5l.

Maguire, B. 1943.
A monograph of the genus Arnica. Brittonia 4: 386-510.

Mulligan, G. A. 1974.
Cytotaxonomic studies of Draba nivalis and its close allies in Canada and Alaska.
Canadian Journal of Botany 52: 1793-1801.

Mulligan, G. A. 1975.
Draba crassifolia, D. albertina, D. nemorosa and D. stenoloba in Canada and Alaska.
Canadian Journal of Botany 53: 745-751.

Mulligan, G. A. and W. J. Cody. 1968.
Draba norvegica, disjunct to the Mackenzie District, Northwest Territories, Canada.
Canadian Journal of Botany 46: 1334-1335.

Mulligan, G. A. and A. E. Porsild. 1966.
Rorippa calycina in the Northwest Territories, Canada. Canadian Journal of Botany 44:
1105.

Mulligan, G. A. and A. E. Porsild. 1969.
A new species of Lesquerella (Cruciferae) in northwestern Canada. Canadian Journal of
Botany 47: 215-216.

Nagy, J. A., A. M. Pearson, B. C. Goski and W. J. Cody. (1979)
Noteworthy vascular plant collections from the northern Yukon Territory and northwestern
Mackenzie District, Canada. Canadian Field-Naturalist 93(3):

Petitot, E. 1891.
Autour du Grand Lac des Esclaves. Albert Savine, Paris 369pp.

Polunin, N. 1940.
Botany of the Canadian Eastern Arctic, Part I Pteridophta and Spermatophyta. National
Museum of Canada Bulletin 92: 1-408.

Porsilid, A. E. 1939).
Nymphaea tetragona Georgi in Canada. Canadian Field-Naturalist 53: 48-50.

Porsild A. E. 1943.
Materials for a flora of the Continental Northwest Territories of Canada. Sargentia 4:
1-79.

Porsild, A. E. 1945.
The alpine flora of the east slope of Mackenzie Mountains, Northwest Territories.

National Museum of Canada Bulletin 101: 1-35.

Porsild, A. E. 1947.
The genus Dryas in North America. Canadian Field-Naturalist 61: 175-192.
Porsild, A. E. 1950.
The genus Antennaria in northwestern Canada. Canadian Field-Naturalist 64: 1-25.
Porsild AS EC 1951
Botany of southeastern Yukon adjacent to the Canol Road. National Museum of Canada
Bulletin 121: 1-400.
Porsild, A. E. 1954.
The North American races of Saxifraga flagellaris Willd. Svensk Botanisk Tidsskrift 51:
292-299.
Pors1ld, ASSET l957E
Illustrated flora of the Canadian Arctic Archipelago. National Museum of Canada
Bulletin 146: 1-209.
Porsild "AS Hie 1961"
The vascular flora of an alpine valley in the Mackenzie Mountains, N.W.T. National
Museum of Canada Bulletin 171: 116-130.
POLS LAS ASE II968E
Stellaria longipes Goldie and its allies in North America. National Museum of Canada
Bulletin 186: 1-35.
Pors id "AS ES 1965:
The genus Antennaria in eastern arctic and subarctic America. WSensk Botanisk
Tidsskrift 61: 22-55.
Porsild, A. E. 1966a.
Contributions to the flora of southwestern Yukon Territory. National Museum of Canada
Bulletin 216: 1-86.
Porsild, A. E. 1966b.
Some new or critical plants of Alaska and Yukon. Canadian Field-Naturalist 79: 79-90.
Porsild, A. E. 1974.
Materials for a flora of central Yukon Territory. National Museum of Canada
Publications in Botany 4: 1-77.
Porsild, A. E. and W. J. Cody. 1968.
Checklist of the vascular plants of Continental Northwest Territories. Plant Research
Institute, Canada Agriculture, Ottawa 102pp.
Porsild, A. E. and W. J. Cody (in press)
Vascular plants of the Continental Northwest Territories. National Museum of Natural
Sciences, Ottawa.
Raup, H. M. 1936.
Phytogeographic studies in the Athabaska -- Great Slave Lake region. I. Catalogue of
the vascular plants. Journal of the Arnold Arboretum 17: 180-315.

Raup, H. M. 1947.
The botany of southwestern Mackenzie. Sargentia 6: 1-275.
Rollins, R. C. 1962.
A new crucifer from the Great Slave Lake area of Canada. Rhodora 64: 324-327.
Savile, D. B. O. and J. A. Calder. 1952.
Notes on the flora of Chesterfield Inlet, Keewatin District, N.W.T. Canadian
Field-Naturalist 66: 103-107.
Scotter, G. W. 1966.
A contribution to the flora of the eastern arm of Great Slave Lake, Northwest
Territories. Canadian Field-Naturalist 80: 1-18.
Scotter, G. W. and W. J. Cody. 1974.
Vascular plants of Nahanni National Park and vicinity, Northwest Territories.
Naturaliste canadien 101: 861-891.
Shrensen, Th. 1953.
A revision of the Greenland species of Puccinellia Parl. Meddelelser om Grgnland 136(3):
119
Thieret, J.W. 1961.
New plant records for southwestern District of Mackenzie. Canadian Field-Naturalist 75:
Hails
Thieret, J. W. 1962.
New plant records from District of Mackenzie, Northwest Territories. Canadian
Field-Naturalist 76: 206-208.
Thieret, J. W. 1963a.
Botanical survey along the Yellowknife Highway Northwest Territories, Canada. I.
Catalogue of the flora. Sida 1: 117-170.
Thieret, J. W. 1963b.
Additions to the flora of the Northwest Territories. Canadian Field-Naturalist
TUS AGG

ie" Wid side ie L

: ar ae

oes a's
Se EU
CRT |

> Be 17. sé a2! A ws - D

ee ee ee

to 1s) hé dtOren

2 ht és: 11 to UN POMPES

oe Be Dee v

vis aa vom CRE 2

AN -= A) |

ae oe ei ee:
7
wt ita le

-V tam JR
+ Gute Rae

.
. .
a A 64g 42 à = 00 Fo |
Vtt
# , uy (eee

ina f° dbo @r Gable Gare

91 Pie
7
ed
L J 0

SYLLOGEUS TITLES

No.

McAllister, Don E., Anton B. Leere, and Satya P. Sharma (1972)
A BATCH PROCESS COMPUTER INFORMATION RETRIEVAL AND CATALOGUING SYSTEM IN THE FISH
COLLECTION, NATIONAL MUSEUM OF NATURAL SCIENCES

Shchepanek, M.J. (1973)
BOTANICAL INVESTIGATION OF THE OTISH MOUNTAINS, QUEBEC

Shih, Chang-tai (1973)

A PRELIMINARY SURVEY OF INVERTEBRATE ZOOLOGISTS AND THEIR PRESENT ACTIVITIES IN
CANADA/REPERTOIRE PROVISOIRE DES ZOOLOGISTES DES INVERTEBRES ET DES TRAVAUX QU'ILS
POURSUIVENT PRESENTEMENT AU CANADA

Faber, 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 LEPOCEPHALI 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)
FRENCH, ENGLISH AND SCIENTIFIC NAMES OF MARINE FISHES OF ARCTIC CANADA/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 M. (1976)
PALYNOLOGICAL RESEARCH AT THE NATIONAL MUSEUM OF NATURAL SCIENCES, OTTAWA “TODAY AND
TOMORROW"

No.

Chengalath, R. (1977)
A LIST OF ROTIFERA RECORDED FROM CANADA WITH SYNONYMS

The KTEC Group (1977)
CRETACEOUS-TERTIARY EXTINCTIONS AND POSSIBLE TERRESTRIAL AND EXTRATERRESTRIAL CAUSES

Jarzen, David M. (1977)
THE POLLEN AND SPORE REFERENCE COLLECTION AT THE NATIONAL MUSEUMS OF CANADA

Argus, George W., and David J. White (1977)
THE RARE VASCULAR PLANTS OF ONTARIO/LES PLANTES VASCULAIRES RARES DE L'ONTARIO

Harington, C.R. (1978)
QUARTERNARY VERTEBRATE FAUNAS OF CANADA AND ALASKA IN A SUGGESTED CHRONOLOGICAL
SEQUENCE

Jarzen, David M. and Gregory J. Whalen (1978)
CATALOGUE OF THE POLLEN AND SPORE EXCHANGE COLLECTIONS, NATIONAL MUSEUM OF NATURAL
SCIENCES

Argus, George W. and David J. White (1978)
THE RARE VASCULAR PLANTS OF AIBERTA/LES PLANTES VASCULAIRES RARES DE L'AIBERTA

Maher, Robert V., D.J. White, G.W. Argus and Paul A. Keddy (1978)
THE RARE VASCULAR PLANTS OF NOVA SCOTIA/LES PLANTES VASCULAIRES RARES DE LA
NOUVELLE-ECOSSE

19 Boullard, Bernard (1979)

CONSIDERATIONS SUR LA SYMBIOSE FONGIQUE CHEZ LES PTERIDOPHYTES

Maher, Robert V., George W. Argus, Vernon L. Harms and John H. Hudson (1979)
THE RARE VASCULAR PLANTS OF SASKATCHEWAN/LES PLANTES VASCULAIRES RARE DE LA
SASKATCHEWAN

21 Brunton, D.F. (1979)

THE VASCULAR PLANT COLLECTIONS OF JOHN MACOUN IN ALGONQUIN PROVINCIAL PARK, ONTARIO

Warkentin, John (1979)
GEOLOGICAL LECTURES OF DR. JOHN RICHARDSON

Internet Archive Audio

Featured

Top

Images

Featured

Top

Software

Featured

Top

Books

Featured

Top

Video

Featured

Top

Mobile Apps

Browser Extensions

Archive-It Subscription

Save Page Now

Full text of "Syllogeus"

See other formats