New plants from British Honduras

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UNIVERSITY
OF ILLINOIS

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FIELD MUSEUM OF NATURAL HISTORY

FOUNDED BY MARSHALL FIELD, 1893

PUBLICATION 316
BOTANICAL SERIES VOL. XI, No. 4

NEW PLANTS FROM BRITISH HONDURAS

BY

PAUL C. STANDLEY

ASSOCIATE CURATOR OF THE HERBARIUM, DEPARTMENT OF BOTANY

Ti-::

aSlTY OF ILLINOIS,

B. E. DAHLGREN

ACTING CURATOR, DEPARTMENT OF BOTANY
EDITOR

CHICAGO, U. S. A.
DECEMBER 15, 1932

FIELD MUSEUM OF NATURAL HISTORY

FOUNDED BY MARSHALL FIELD, 1893

PUBLICATION 316
BOTANICAL SERIES VOL. XI, No. 4

NEW PLANTS FROM BRITISH HONDURAS

BY

PAUL C. STANDLEY

ASSOCIATE CURATOR OF THE HERBARIUM, DEPARTMENT OP BOTANY

TEE lESfflY OF TH
OtC3 11932

UNIVERSITY Of ILLINOIS.

B. E. DAHLGREN

ACTING CURATOR, DEPARTMENT OF BOTANY
EDITOR

CHICAGO, U. S. A.
DECEMBER 15, 1932

PRINTED IN THE UNITED STATES OF AMERICA
BY FIELD MUSEUM PRESS

r A--'

NEW PLANTS FROM BRITISH HONDURAS

PAUL C. STANDLEY

The new species of British Honduras plants described on the
following pages have been found mostly in two large series of plants
obtained in that country during 1931-32, and forwarded in whole
or part to the writer for study. Mr. William A. Schipp has continued
his collections, begun several years ago, and the numbers of his
regular series are now well in excess of a thousand. In addition,
he has prepared a separate series, of plants not found in sufficient
quantity for distribution in his regular sets, the numbers of this
secondary series being preceded by the capital letter S. All Mr.
Schipp's recent collections have been made in the southern half of
the colony, the latest one in the Toledo District, in the region of
Punta Gorda. A high percentage of the newer collections has con-
sisted of species unknown previously from the colony, and he has
discovered almost as high a proportion of new species as in his
earlier sendings. Evidently there still is much to be learned of
the British Honduras flora.

No less important, but, indeed, greater in number, are the
collections made in the early months of 1931 in British Honduras
and Pet£n by Professor H. H. Bartlett (an expedition of the Her-
barium and the Museum of Zoology of the University of Michigan
cooperating with the Department of Historical Research of the
Carnegie Institution of Washington in a biological survey of
the Maya area). His British Honduras material was obtained chiefly
in the El Cayo District, previously unexplored. The portion of
his collections studied by the writer has contained scores of species
new to the flora of the colony, and various well-marked species new
to science.

Professor Bartlett also has sponsored collections made in the
El Cayo and Corozal Districts by Mr. Percy H. Gentle, and these
likewise have contributed substantially to the rapidly developing
picture of the characteristic vegetation of this portion of the Yucatan
Peninsula.

Philodendron belizense, sp. nov. Sect. Pteromischum. — Scan-
dens usque ad 9 m. longa, ramulis teretibus in sicco ochraceis
leviter striatis 1 cm. crassis, internodiis brevibus; petiolus crassius-

129

130 FIELD MUSEUM OF NATURAL HISTORY — BOTANY, VOL. XI

culus 16-19 cm. longus, vagina angusta persistente paullo infra
laminae basin soluta apice obtusa instructus; lamina membranacea
late ovato-oblonga 34-38 cm. longa 16-17 cm. lata apicem versus
paullo angustata breviter subabrupte acuminata, nervis primariis
c. 20-jugis angulo fere recto divergentibus quam secondarii valde
distinctioribus; pedunculus crassus 2-2.5 cm. longus; spatha anguste
oblonga 14.5 cm. longa involuta alba; cetera ignota. — British Hon-
duras: Base of Cockscomb Mountains, altitude 150 m., June 15,
William A. Schipp 545 (Herb. Field Mus. Nos. 621,939-940, type).

A relative, apparently, of P. guttiferum Kunth, a frequent
Central American species, which is smaller in all its parts.

Heisteria Chippiana, sp. nov. — Arbor 12-metralis omnino
glabra, trunco 30 cm. diam., ramulis crassis brunneo-oliyaceis
subteretibus, internodiis brevibus; folia majuscula breviter petiolata
subcoriacea, petiolo crasso 8-14 mm. longo; lamina oblonga vel
lanceolato-oblonga 10-13 cm. longa 4-5.5 cm. lata sensim vel
abrupte breviterque obtuso-acuminata, basi acuta, sublucida, costa
supra subimpressa nervis obsoletis, subtus paullo pallidior, costa
gracili elevata, nervis lateralibus irregularibus prominulis angulo
acuto adscendentibus, venulis obsoletis; flores subsessiles vel breviter
crasse pedicellati; calyx in statu fructifero 3-4 cm. latus patens vel
plus minusve reflexus primo viridis, serius purpureo-ruber, fere ad
medium lobatus, lobis latissimis late rotundatis; drupa globosa
ochroleuca 1.5 cm. diam. et ultra apice rotundata. — British Hon-
duras: Nineteen Mile, Stann Creek Valley, along creek bank, very
rare, altitude 100 m., July 9, 1932, William A. Schipp 970 (Herb.
Field Mus. No. 657,802, type).

The collector states that the wood is close-grained and has a
silky sheen. Among the few Central American species of Heisteria,
this may be recognized at once by its extraordinarily large fruits.
At Mr. Schipp's request, it is named for the late Dr. T. F. Chipp,
of the Royal Botanic Gardens, Kew.

Desniopsis Schippii, sp. nov. — Arbor 9-metralis, trunco 22 cm.
diam., ramulis gracilibus adpresso-pilosulis vel glabratis, internodiis
brevibus; folia mediocria rigide membranacea breviter petiolata in
siccp olivacea, petiolo crassiusculo 4-6 mm. longo adpresso-pilosulo;
lamina elliptica vel oblongo-elliptica 12-16 cm. longa 4.5-7 cm.
lata abrupte cuspidato-acuminata, acumine obtuso, basi acuta vel
obtusa vel rotundata et abrupte contracta, utrinque glabra vel ut
videtur in statu juvenili subtus ad costam sparse adpresso-pilosa,
nervis lateralibus utroque latere c. 7 tenerrimis obliquis infra
marginem conjunctis, venulis prominulis laxissime reticulatis;
inflorescentiae oppositifoliae pauciflorae, pedunculo brevissimo,
pedicellis gracilibus ut videtur recurvis 2 cm. longis fere glabris;
sepala late oyata obtusa sericea 2.5 mm. longa; petala viridia flaves-
centia linearia 3 cm. longa prope medium 2.5 mm. lata basi paullo

PLANTS OF BRITISH HONDURAS 131

latiora versus apicem obtusum sensim angustata sparse minute
sericea. — British Honduras: Nineteen Mile, Stann Creek Valley,
along creek bank in forest, altitude 75 m.^June 28, 1932, William
A. Schipp 960 (Herb. Field Mus. No. 657,797, type).

"Very rare." Related to D. microcarpa Fries and D. Maxonii
Safford, of Panama, both of which have smaller flowers and relatively
broader petals.

Virola brachycarpa, sp. nov. — Arbor excelsa 12-15-metralis,
trunco 22-25 cm. diam., ramulis griseis teretibus rimosis, novellis
olivaceis sparse obscure tomentellis, internodiis brevibus; folia
parva breviter petiolata crasse membranacea, petiolo gracili 6-9 mm.
longo glabro involute; lamina anguste oblonga vel oblanceplato-
oblonga 7-14 cm. longa 1.8-4 cm. lata subabrupte longiacuminata,
acumine acutiusculo, basi acuta vel acutiuscula, supra in sicco
laete viridis vel fusca, glabra, costa impressa, nervis obscuris, subtus
glaucescens sparsissime minute stellato-puberula vel fere omnino
glabra, costa gracili elevata, nervis lateralibus utroque latere c. 12
tenerrimis prominulis obliquis, venulis obsoletis; paniculae laterales
foliis duplo breviores laxe multiflorae cymoso-paniculatae, ramis
patentibus vel subreflexis gracilibus sparse ferrugineo-tomentellis,
floribus subumbellatis, pedicellis crassiusculis 4-5 mm. longis tomen-
tellis; perianthium luteum sparse minutissime tomentellum vel
glabratum 2-2.5 mm. longum ad medium trilobum, lobis late ovatis
obtusis; fructus ovali-globosus minutissime tomentellus vel fere
glaber 1.5 cm. longus et fere aequilatus basi et apice late rotundatus;
semen late ovale 13 mm. longum 10 mm. latum basi et apice late
rotundatum brunneum lucidum, arillo ad basin in lobos lineares
semen totum involventes laciniato. — British Honduras: Stann
Creek Valley, in primary advanced forest, common, January 13,
1932, J. A. Burns 20 (Herb. Field Mus. No. 658,854, type). Near
Middlesex, mountain forest, altitude 210 m., occasional, November
22, 1929, W. A. Schipp 475. Big Creek, in forest, rare, December 2,
Schipp 858.

Known as Banak or Bastard Banak. Distinguished from all
the other Virola species known from Central America by the very
small, almost glabrous leaves, and by the small fruits.

Mimosa pinetorum, sp. nov. — Herba procumbens 1.5 m.
longa, caulibus gracillimis quadrangulatis ad angulos pallidis aculeis
parvis c. 1 mm. longis recurvis gracilibus sparse armatis, internodiis
valde elongatis; petioli graciles 1.5-3 cm. longi sparse aculeolati;
pinnae unijugae c. 2.5 cm. longae inermes vel aculeolis 1-2 armatae,
foliolis c. 8-jugis 10 mm. longis 3 mm. latis apice rotundatis basi
obtusis breyissime petiolulatis glabris; stipulae filiformes 2.5 mm.
longae persistentes; flores capitati sessiles, capitulis ut videtur
paucifloris, pedunculis gracilibus glabris 1.5-2.5 cm. longis; legumen
lineare 3-4.5 cm. longum 4-5 mm. latum breviter crasse stipitatum

132 FIELD MUSEUM OF NATURAL HISTORY— BOTANY, VOL. XI

rectum vel leviter curvum cuspidatum glabrum, marginibus dense
aculeolis gracillimis rectis 1.5-2 mm. longis armatis, articulis 7-11.—
British Honduras: Ravine, Mountain Pine Ridge, El Cayo District,
February 21, 1931, H. H. Bartlett 11629 (Herb. Field Mus. No.
652,461, type).

Inga Schippii, sp. nov. — Arbor 12-metralis, trunco 22 cm.
diam., ramulis subteretibus densissime adpresse brunneo-tomentosis;
folia majuscula breviter petiolata, petiolo cum rhachide 10-13 mm.
longo gracili exalato tomentuloso, inter paria foliolorum glandula
majuscula depressa onusto; foliola 4-juga breviter petiolulata oblonga
vel oblanceolato-pblonga, terminalia circa 19 cm. longa et 8.5 cm.
lata, inferiora minora, abrupte acuta vel breviter acuminata basi
acutiuscula in sicco fusca supra tantum ad costam puberula, subtus
concoloria sparse breviter pilosula vel glabrata; flores umbellati,
umbellis paniculatis multifloris breviter pedunculatis, panicula 20 cm.
longa et 15 cm. lata, ramis dense brunneo-tomentosis, bracteis
parvis persistentibus, pedicellis gracilibus 5-8 mm. longis; calyx
tubulosus 8-9 mm. longus supra vix dilatatus et 2.5 mm. latus
dense adpresso-pilosulus, dentibus triangularibus acutiusculis 1-1.5
mm. longis erectis; corolla calyce vix 2 mm. longior extus dense
strigosa, lobis brevibus oblongo-ovatis pbtusiusculis; stamina nume-
rosa corolla circa 1 cm. longiora. — British Honduras: Banana Bank,
base of Cockscomb Mountains, altitude 150 m., in primary forest,
June 10, William A. Schipp 538 (Herb. Field Mus. No. 621,989,
type).

"Rare. Flowers white, highly perfumed." In the key to the
species of Inga published by Britton and Rose in the North American
Flora, this species runs at once to I. Williamsii Pittier, of Panama,
in which the calyx is only 3.5-4 mm. long.

Cassia Bartlettii, sp. nov. — Subgenus Chamaecrista. Herba
erecta interdum suffructicosa usque ad 1.5 m. alta rigida, ramis
suberectis teretibus laevibus sparse vel densiuscule patenti-pilosa,
internodiis brevibus saepe stipulis occultis; stipulae ovato-oblongae
persistentes 10-14 mm. longae acutae basi breviter cordatae sessiles
multistriatae glabratae longiciliatae; folia numerosa breviter petio-
lata, petiolo ut rhachis brevissima breviter dense piloso prope
apicem glandula parva depressa onusto; foliola bijuga cuneato-
oblonga vel obovato-oblonga 10-19 mm. longa 5-7 mm. lata plus
minusve obliqua apice oblique rotundata sessilia basin versus paullo
angustata, basi ipsa lata pbtusa vel subtruncata, glabra longiuscule
ciliata 4-5-nervia subtus interdum pallida vel glaucescentia; pedun-
culi axillares uniflori foliis Iqngiores dense pilosi bibracteolati; sepala
valde inaequalia glabra tenuiter multistriata longiacuminata, longiora
14 mm. longa; petala lutea glabra 1.5 cm. longa; legumen oblongp-
lineare c. 4 cm. longum et 7 mm. latum dense fulvo-hispidum, semi-
nibus c. 12. — British Honduras: Mountain Pine Ridge, El Cayo
District, February 21, 1931, H. H. Bartlett 11649 (Herb. Field

PLANTS OF BRITISH HONDURAS 133

Mus. No. 658,353, type). Cornhouse Creek, Manatee River, Belize
District, Bartlett 11306. North of Baldy Sibun, fairly common,
J. B. Kinloch 76. All Pines, open places, occasional, W. A. Schipp
557.

A relative of C. Desvauxii Collad., and altogether distinct from
any of the species of the so-called genus Chamaecrista listed for
North America by Britton and Rose.

Galactia belizensis, sp. noy. — Herba volubilis, caulibus gracil-
limis viridibus dense pilis breviusculis rigidis reflexis pilosis, inter-
nodiis elongatis; stipulae breves lineares striatae erectae; folia
longipetiolata, petiolo gracili retrorso-piloso, rhachide 3-7 mm.
longa, petiolulis usque ad 2 mm. longis; foliola firme membranacea
ovalia vel oblongo-ovata 2-4 cm. longa 1-2.2 cm. lata apice obtusa
vel rotundata et breviter mucronata, basi late rotundata, supra
laete viridia ad costam sparse adpresso-pilosa aliter glabra, venulis
prominulis, subtus fere concoloria dense strigosa; flores axillares
fasciculati pauci vel in racemos breves paucifloros dispositi, inflores-
centiis petiolis brevioribus, pedicellis gracilibus usque ad 4 mm.
longis strigosis; calyx angustus 4 mm. longus dense strigosus ad
medium vel profundius lobatus, laciniis subaequalibus erectis
lineari-attenuatis; corolla alba 5-6 mm. longa, vexillo angusto
extus glabro; legumen lineare 5-spermum c. 2.5 cm. longum et 4 mm.
latum inter semina leviter impressum pilis adscendentibus molliter
pilosum apice apiculatum basi breviter crasse stipitatum. — British
Honduras: River bluffs, El Cayo, February 13, 1931, H. H. Bartlett
11U9 (Herb. Field Mus. No. 652,460, type).

The only other species known from the region, G. striata (Jacq.)
Urban, has elongate many-flowered racemes and broader pods.

Dalechampia Schippii, sp. nov. — Herba scandens metralis,
caulibus gracillimis pilis brevibus patentibus vel subreflexis pilosis,
internodiis foliis longioribus; stipulae viridescentes lanceolatae 3 mm.
longae; folia parva brevissime petiolata crasse membranacea, petiolo
crassiusculo 3-6 mm. longo piloso; lamina oblonga 3.5-5 cm. longa
1.2-2.5 cm. lata abrupte breviter acuminata, interdum obtusa et
breviter acuminata, basi subcordata, remote obscure serrulata vel
prope apicem grosse serrata, utrinque breviter molliterque pilosa,
trinervia, venulis subtus prominentibus atque arete reticulatis;
pedunculi axillares solitarii foliis longiores; bracteae ovato^rotundatae
2-2.5 cm. longae et aequilatae apice lato breviter trilobae infra
apicem sinuato-denticulatae yelutino-pilosulae; pedicelli florum
masculorum 5 mm. longi glabri. — British Honduras: Sara wee, pine
ridge, altitude 15 m., W. A. Schipp Si 81 (Herb. Field Mus. No.
652,438, type).

Bracts pink, veined with salmon. The form of the bracts is
suggestive of D. tiliifolia Lam., a species with deeply trilobate leaves.

134 FIELD MUSEUM OF NATURAL HISTORY— BOTANY, VOL. XI

Phyllanthus ferax, sp. nov. — Fruticosa vel herbacea c. 60 cm.
alta glabra densiuscule fere a basi ramosa, ramis gracillimis adscen-
dentibus ferrugineis; stipulae scariosae e basi ovata anguste attenu-
atae; folia parva alterna breviter petiolata membranacea, petiolo
gracili 1.5-2.5 mm. longo; lamina obovato-elliptica vel oblongo-
elliptica 1.5-2.8 cm. longa 0.8-1.5 cm. lata apice late rotundata
basi acuta supra viridis subtus glaucescens, nervis obscuris; flores
monoeci solitarii vel geminati, pedicellis florum feminorum 2.5-3
mm. longis, masculorum paullo brevioribus; sepala floris masculi 6
oblonga obtusa pallida 1.5 mm. longa; sepala floris femini 6 viridia
late obovata 3 mm. longa apice obtusa vel rotundata sub capsulam
persistentia patentia; capsula trilqcularis depresso-globosa 3-3.5 mm.
lata; semina fusco-brunnea laevia opaca. — Guatemala: Uaxactun,
Dept. Pete"n, dry arroyo, March 20, 1931, H. H. Bartlett 12157
(Herb. Field Mus. No. 652,466, type).— British Honduras: El Cayo,
April 13, 1931, Bartlett 12993.

A well-marked species, not closely related to any of the other
Central American ones.

Sebastiania longicuspis, sp. nov. — Arbor 14-metralis, trunco
25 cm. diam., omnino glabra, ramulis gracilibus ferrugineis vel
brunnescentibus; folia mediocria petiolata firme membranacea,
petiolo gracili 5-9 mm. longo; lamina oblonga vel anguste oblanceo-
lato-oblonga 7-10.5 cm. longa 2.5-3.5 cm. lata apice obtusa vel
subrotundata et abrupte in acumen linearem obtusum 1-1.5 cm.
longum contracta, basi obtusa, laete viridis, remote obscure crenato-
serrulata, margine prope basin laminae anguste revoluto; flores
spicati, spicis axillaribus 3 cm. longis et ultra dense multiflpris,
bracteis arete sessilibus; fructus ut videtur drupaceus 1.5 cm. diam.
globosus glaber. — British Honduras: Eldorado, on hilltop in shade,
altitude 120 m., September 17, 1932, William A. Schipp 1018 (Herb.
Field Mus. No. 661,010, type). Vaca, western Cayo District, in
1927, Duncan Stevenson 2 (Yale No. 11985). — Guatemala: Cubilquitz,
Tuerckheim 8658.

The vernacular name in British Honduras is "ridge white poison-
wood." There is some doubt regarding the proper generic position
of this tree, but it appears to be closely related to Sebastiania adeno-
phora Pax & Hoffm., of the same region.

Buxus Bartlettii, sp. nov. — Ramuli plus minusve flexuosi,
vetustiores ochracei subteretes rimosi, novelli graciles virides sub-
quadrangulati et sulcati ad sulcos hispiduli, internodiis foliis breyior-
ibus; folia parva breviter petiolata subcoriacea in sicco griseo-
viridia, petiolo crasso 2-3 mm. longo sparse hispidulo vel glabrato;
lamina anguste lanceolato^oblonga 3-5.8 cm. longa 7-10 mm. lata
sensim acuminata, apice spiniformi, basi acuta vel attenuata, integra,
glabra, costa supra sulcata, venulis prominulis arete reticulatis,
subtus concolor, costa valde elevata, basi trinervia, venulis prominulis
arctissime reticulatis, marginibus revolutis; racemi umbelliformes

PLANTS OF BRITISH HONDURAS 135

sessiles vel 3 mm. longe pedunculati multiflori densi, pedicellis
florum masculqrum angulatis gracilibus 2-3 mm. longis hispidulis,
flore femino unico sessili, bracteis sepalis conformibus; sepala viridia
1.5 mm. longa oblongo-ovata obtusa erecta ciliolata; stamina exserta,
antheris late oblongis 0.8 mm. longis; styli crassi 2 mm. longi.—
British Honduras: River bluffs, El Cayo, February 13, 1931, H. H.
Bartlett 11437 (Herb. Field Mus. No. 652,455, type).

This is, apparently, the first record of the genus Buxus and of
the family Buxaceae for Central America. The British Honduras
species is closely related to B. lancifolia Brandegee of San Luis
Potosi, Mexico, the latter differing in its more congested inflorescence
and broader, thinner, acuminate sepals.

Hampea euryphylla, sp. nov. — Arbor, ramis crassis tomento
sordide brunneo quasi minute tuberculatis; folia magna longipetiolata
crasse membranacea, petiolo crassiusculo 2.5-8.5 cm. longo dense
stellato-tomentoso; lamina subreniformis usque ad rotundato-ovata
7-17 cm. longa et aequilata apice obtusa vel late rotundata et
emarginata, basi breviter aperte cordata vel rarius subtruncata,
7-nervia, supra sparse minutissime stellato-puberula vel fere glabra,
subtus densius pilis minutis stellatis conspersa vel interdum glabrata;
flores axillares pauci fasciculati, pedicellis crassis 5-10 mm. longis
vel in statu fructifero ad 2 cm. dense stellato-tomentosis; calyx
late campanulatus 4 mm. longus pallide stellato-tomentosus sub-
truncatus vel breviter inaequaliter lobatus persistens; petala in
alabastro extus tomento minutissimo lucido quasi vernicoso induta,
in anthesi reflexa et c. 1 cm. longa angusta obtusa; stamina numerosis-
sima, filamentis gracilibus glabris; capsula subglobosa sessilis 1.8 cm.
longa basi et apice rotundata densissime tomento crasso plus minusve
deciduo fulvo stellate induta. — British Honduras: Temash River,
December 9, 1930, H. P. Smart & N. S. Stevenson 142; Yale No.
19793 (Herb. Field Mus. No. 633,379, type).

The proposed species is rather too closely related to Hampea
trilobata Standl., which occurs in both Yucatan and British Honduras.
The latter seems to differ constantly, however, in its longer and
more slender pedicels and especially in its smaller and narrower
leaf blades, truncate or rounded at the base and often shallowly
lobate.

Xylosma anisophylla, sp. nov. — Arbuscula omnino glabra,
ramis crassis fuscis vel ochraceis lenticellatis inermibus, novellis
ferrugineis; folia mediocria coriacea breviter petiolata inaequalia
interdum fasciculata, petiolo 2-4 mm. longo crassiusculo; lamina
anguste oblanceolato-oblonga rhombeo-lanceolata obovata vel late
elliptico-ovata usque ad 9 cm. longa vulgo 3-5 cm. longa apice
obtusa vel rotundata basi anguste cuneato-attenuata vel interdum
obtusa, remote adpresse crenato-serrata vel subintegra, supra lucida
venis planis vel vix prominulis, subtus paullo pallidior, venulis

136 FIELD MUSEUM OF NATURAL HISTORY — BOTANY, VOL. XI

prominulis arete reticulatis; flores numerosi in axillis yel ad nodos
defoliates fasciculati, pedicellis gracilibus rectis glabris 5-10 mm.
longis; sepala oblonga vel lanceolato-oblonga obtusa 1 mm. longa
ciliata patentia; bacca glabra subglobosa 5-6 mm. longa; semina
c. 5 ferruginea. — Mexico: Tuxpena, Campeche, November 26, 1931,
C.L.Lundell 988 (Herb. Field Mus. No. 655,196, type) ; December 25,
1931, Lundett 1131. — British Honduras: Honey Camp, November,
1929, Lundell 663, 675. Cornhouse Creek, Manatee River, Belize
District, January, 1931, Bartlett 11272.

A relative of the Mexican and Central American X. flexuosa
(HBK.) Hemsl., which, as recently treated, is probably a collective
species.

Xylosma characantha, sp. nov. — Frutex 60-90 cm. altus, ramis
gracilibus flexuosis ochraceis, novellis ferrugineis dense hirtellis,
internodiis foliis brevioribus; folia mediocria brevissime petiolata
firme membranacea in sicco cinereo-viridia, petiolo 1.5-3 mm. longo
hirtello; lamina ovata vel oyato-elliptica 5-6 cm. longa 2.5-3.3 cm.
lata acuta vel breviter acuminata, acumine ipso obtuso, basi obtusa
vel rotundata, supra tantum ad costam hirtella, venulis prominulis
arete reticulatis, sublucida, subtus concolor praesertim ad venas
dense hirtella, nervis lateralibus utroque latere c. 4; flores in axillis
fasciculati pauci subsessiles vel vix 2 mm. longe pedicellati, pedicellis
crassiusculis hirtellis; sepala patentia ovata vel triangulari-ovata
1 mm. longa obtusa ciliata extus pubescentia; bacca rubra globosa
5-6 mm. diam. interdum obtuse tuberculata dense hirtella; semina
c. 3.— British Honduras: El Cayo, March 5-13, 1931, H. H. Bartlett
12004 (Herb. Field Mus. No. 652,459, type).— Guatemala: In
jungle, Uaxactun, Dept. Pete"n, March 26, 1931, Bartlett 12334.

Related to the rather widely distributed X. velutina (Tul.)
Triana & Karst., in which the fruit is glabrous and smooth.

Calyptranthes Bartlettii, sp. nov. — Frutex 0.5-3.5 m. altus,
ramis crassis teretibus, vetustioribus cinereis rimosis, novellis dense
pilis ferrugineis lucidis subpatentibus villosis, internodiis brevibus
vel elqngatis; folia majuscula sessilia vel subsessilia subcoriacea
angustissime oblonga 8-18 cm. longa 2^4.5 cm. lata versus apicem
obtusum sensim angustata, basi leviter vel profundius cordata,
supra in sicco viridia lucida prope costam impressam sparse sub-
adpresso-pilosa vel fere omnino glabra, utrinque densissime minute
nigro-punctata, subtus paullo pallidiora in statu juvenili dense
ferrugineo-tomentosa glabrescentia, costa crassa elevata, nervis
lateralibus numerosissimis tenerrimis prominentibus angulo fere
recto abeuntibus prope marginem in nervum collectivum regularem
conjunctis; inflorescentiae terminales et axillares cymoso-paniculatae
laxae multiflorae longipedunculatae basi trichotomae 2.5-6.5 cm.
longae et aequilatae, pedunculo 2-6.5 cm. longo ut rami paniculae
dense ferrugineo-tomentoso, bracteis infimis interdum magnis et
foliaceis cito deciduis, floribus glomeratis sessilibus; alabastra dense

PLANTS OF BRITISH HONDURAS 137

ferrugineo-tomentosa ovoideo-globosa pbtusa vel acutiuscula 4 mm.
longa; petala ut videtur nulla, staminibus numerosissimis, antheris
minutis; bacca atrorubra globosa dense minute hirtella vel glabrata
c. 1 cm. diam.; semina 1-3 lucidissima brunnescentia 6 mm. longa
obtuse angulata vel subglobosa. — British Honduras: Along stream,
Mountain Pine Ridge, El Cayo District, February 27, 1931, H. H.
Bartlett 11837 (Herb. Field Mus. No. 658,351, type); May 7, 1931,
Bartlett 13059. On gravel and ledges, Monkey Falls, El Cayo,
February 13, 1931, Bartlett 11458.

A well-marked species, remarkable for its abundant rusty pubes-
cence and especially for the narrow, greatly elongate leaves with
sessile cordate bases.

Eugenia belizensis, sp. nov. — Frutex 3-metralis omnino glaber,
ramis gracillimis teretibus brunnescentibus, internodiis brevibus;
folia parva breviter petiolata subcoriacea, petiolo crassiusculo 3-5
mm. longo; lamina lanceolato-linearis vel oblongo-linearis 4-5 cm.
longa 5-10 mm. lata versus apicem obtusum longe sensimque
attenuata basi acuta, supra in sicco cinereo-viridis, costa subimpressa,
nervis obsoletis, utrinque dense minute punctata, subtus fere con-
color, costa pallida gracili valde elevata, nervis numerosis obliquis
tenerrimis; flores ut videtur solitarii longipedicellati axillares, pedi-
cellis gracilibus 7-10 mm. longis; bacca globosa glabra 7 mm. diam.—
British Honduras: Along brook, Mountain Pine Ridge, El Cayo
District, February 25, 1931, H. H. Bartlett 11756 (Herb. Field
Mus. No. 658,352, type).

Although known only from unsatisfactory material of a single
collection, this plant is clearly distinct from any other Eugenia
known from northern Central America. It is easily recognized by
its small and remarkably narrow leaves.

Eugenia Schippii, sp. nov. — Frutex vel arbor usque ad 9 m.
alta, trunco 15 cm. diam., omnino glabra; folia majuscula brevissime
petiolata subcoriacea minutissime puncticulata, petiolo crasso 3-6
mm. longo; lamina oblonga vel elliptico-oblonga 7-13 cm. longa
2-5 cm. lata sensim vel subabrupte acuminata vel acuta, acumine
ipso obtuso vel acutiusculo, basi acuta vel obtusa, supra in sicco
olivacea, costa impressa, nervis obsoletis, subtus multo pallidior,
costa prominente, nervis lateralibus numerosis tenerrimis fere
occultis; flores solitarii vel fasciculati(?) axillares, interdum e nodis
defoliates nascentes, pedicellis crassis 2-11 mm. longis rectis; sepala
ad apicem baccae persistentia rotundata vel late ovata apice
rotundata vel obtusissima c. 2 mm. longa; bacca nigra globosa 10-12
mm. diam. — British Honduras: Seine Bight, open forest, occasional,
November 26, Wittiam A. Schipp 669; November 6, Schipp Si 41.
Little Mountain Pine Ridge, El Cayo District, May, 1931, Bartlett
13060.

138 FIELD MUSEUM OF NATURAL HISTORY — BOTANY, VOL. XI

Miconia ochroleuca, sp. nov. — Arbor 7.5 m. alta, trunco
7.5 cm. diam., ramulis gracilibus ochraceis, novellis olivaceis glabris
vel minute obscure furfuraceis, internodiis elongatis; folia mediocria
breviter petiolata membranacea, petiolo gracili glabro 7-9 mm.
longo; lamina lanceolato-oblonga vel elliptico-oblonga 9-12.5 cm.
longa 3.5-5 cm. lata longiuscule obtuso-acuminata vel interdum
abrupte breviterque cuspidata basi acuta vel obtusa integra supra
in sicco luteo-yiridis glabra costa impressa, subtus paullo pallidior
glabra vel primp tantum ad costam elevatam obscure minute
furfuracea, triplinervia, nervis lateralibus prope basin laminae
nascentibus, yenis yix prominulis laxe reticulatis, marginibus
leviter revolutis; paniculae terminales parvae pyramidales 5-8 mm.
longe pedunculatae circa 4 cm. longae et aequilatae, ramis obscure
minute furfuraceis vel fere glabris, infimis adscendentibus gracilibus,
floribus racemose dispositis sparsis yix 1 mm. longe pedicellatis;
calyx anguste campanulatus extus minute furfuraceus vix 2.5 mm.
longus supra dilatatus, limbo 2 mm. lato remote minutissime obtuso-
denticulato; petala ochroleuca obovata 2 mm. longa apice rotundata;
stamina longe exserta, antheris paullo inaequalibus anguste lineari-
bus, longioribus 2.2 mm. longis poris paryis obliquis dehiscentibus;
stylus gracilis glaber 5-6 mm. longus. — British Honduras: Middlesex,
in forest, altitude 60 m., rare, November 20, 1929, William A.
Schipp 407 (Herb. Field Mus. No. 606,832, type).

Jacquinia paludicola, sp. nov. — Frutex 3-metralis, trunco
5 cm. diam., omnino glaber, ramulis gracillimis; folia majuscula
subcoriacea vel crasse membranacea breviter petiolata pseudover-
ticillata, petiolo gracili 3-5 mm. longo; lamina oblanceolato-oblonga
8-12 cm. longa 2.5-3.5 cm. lata sensim acuminata, apice mucrone
debili onusta, basin versus sensim attenuata, costa supra impressa
subtus elevata; flores pauci umbellati vel umbellatim racemosi,
umbellis c. 8-floris breviter pedunculatis, pediceUis gracilibus 5-14
mm. longis; sepala orbicularia 2 mm. longa apice late rotundata;
corolla alba 6 mm. longa, lobis rotundatis tubo crasso duplo brevi-
oribus; staminodia petalis duplo breviora apice late rotundata
subintegra; stylus attenuatus crassiusculus 2 mm. longus. — British
Honduras: Forest Home, swampy forest, altitude 60 m., September
11, 1932, Wittiam A. Schipp 1028 (Herb. Field Mus. No. 661,014,
type).

Noteworthy for the large and unusually thin leaves, with only
weakly pungent tips; also for the remarkably small, pale flowers.

Strychnos panamensis Seem., var. hirtiflora, var. nov.—
Ut videtur a forma typica non nisi corolla extus sparse hirsuta,
lobis corollae densius adpresso-hispidulis distinguitur. — British
Honduras: Nineteen Mile, Stann Creek Valley, in dense forest,
altitude 105 m., July 2, 1932, William A. Schipp S301 (Herb. Field
Mus. No. 657,775, type).

PLANTS OF BRITISH HONDURAS 139

A vine 10 m. long, the stem 2.5 cm. in diameter; flowers cream-
colored. In the typical form of the species, which ranges from
British Honduras and Guatemala to Panama, the corolla is glabrous
or pruinose-puberulent.

Fischeria Briquetiana, sp. nov. — Vqlubilis, caulibus teretibus
dense puberulis et sparse hirsutis, internodiis elongatis; folia opposita
mediocria membranacea longipetiolata, petiplo usque ad 7 cm.
longo puberulo et hirsute; lamina late elliptica vel ovato-elliptica
7-14 cm. longa 3.5-9.5 cm. lata apice obtusa vel rotundata et breviter
caudata, acumine angusto 3-4 mm. tantum longo, basi breviter
anguste cordata, lobis brevibus rotundatis, supra brevissime asperule
hirsutula, subtus fere concolor dense breviter velutino-pilosula;
inflorescentiae axillares racemosae 5-8 cm. longe pedunculatae
multiflorae, pedicellis gracilibus 12-25 mm. longis viscido-puberulis
et sparse hirsutis; alabastra ovoideo-globosa obtusissima; sepala
lanceolato-linearia longiattenuata 7-9 mm. longa corolla paullo
longiora viscido-puberula et sparse hirsuta; corolla 12-15 mm.
lata profunde 5-loba, lobis ovatis obtusis crispis utrinque dense
hirtellis; corona exterior carnosa integra gynostegio duplo brevior,
interior e lobis carnosis obtusis gynostegio longioribus composita. —
British Honduras: Nineteen Mile, Stann Creek Valley, along creek
banks in partial sunlight, a vine 9 m. long, very rare, June 25,
1932, William A. Schipp 962 (Herb. Field Mus. No. 657,804, type).

Flowers highly perfumed, light green and yellow. Related to
F. funebris (Donn. Smith) Blake, a common species of Central
America, in which the leaves are conspicuously hirsute, especially
on the nerves, the corolla larger, and the sepals much more elongate.
At the request of the collector, the species is named for the late
Dr. John I. Briquet.

Ipomoea aphylla, sp. nov. — Herba glabra perennis ut videtur
suberecta e basi dense ramosa, caulibus usque ad 1 m. longis gracilibus
sed subrigidis teretibus in sicco cinereo-viridibus subaphyllis; folia
squamiformia subulata pauca c. 1 mm. longa acuta; pedunculi
axillares 1-2 cm. longi apice bibracteati, bracteis subulatis 1-2
mm. longis, pedicellis patentibus vel subreflexis c. 1 cm. longis
superne paullo incrassatis; sepala valde inaequalia oblonga exteriora
obtusa interiora acutiuscula vel apiculata 8-10 mm. longa sub-
coriacea; corolla alba 2.5 cm. longa; stylus filiformis elongatus,
stigmate breviter bilobo, lobis subglobosis; capsula subglobosa 7 mm.
longa; semina dense pilosa. — British Honduras: Pine ridge, Corn-
house Creek, Manatee River, Belize District, January 31, 1931,
H, H. Bartlett 11316 (Herb. Field Mus. No. 658,359, type). All
Pines, open places, rare, July 18, W. A. Schipp 547.

A most curious plant, strikingly unlike any other species known
to the writer. It is remarkable for its somewhat broomlike habit,
and almost complete reduction of the leaves.

140 FIELD MUSEUM OF NATURAL HISTORY — BOTANY, VOL. XI

Jacquemontia Houseana, sp. nov. — Herba yolubilis, caulibus
gracillimis densiuscule stellato-pilosulis, internodiis valde elongatis;
folia mediocria petiolata herbacea, petiolo gracili 0.7-1.5 cm. longo
stellato-piloso; lamina late ovata vel ovato-elliptica 2.5-4.5 cm.
longa 1.5-3 cm. lata abrupte breviter angusteque acuminata basi
breviter vel profunde cordata sinu lato lobis late rotundatis, utrinque
dense molliter stellato-pilosula; cymae dense multiflorae capituli-
formes 2.5 cm. latae, pedunculo usque ad 10 cm. longis, floribus
sessilibus congestis, bracteis ovatis sepalis aequilongis; sepala ovata
vel late ovata 6-8 mm. longa sensim acuminata vel longiacuminata
dense stellato-tomentosa; corolla caerulea extus glabra, limbo fere
2 cm. lato.— British Honduras: El Cayo, April 13, 1931, H. H.
Bartlett 12928 (Herb. Field Mus. No. 652,458, type).

Related to the ligneous-stemmed J. abutiloides Benth. of north-
western Mexico.

Petrea arborea HBK., f. albiflora, f. nov. — A forma typica
calyce ut quoque corolla albo recedit. — British Honduras: River
bank, Sittee River, March 17, 1932, Wittiam A. Schipp 727 (Herb.
Field Mus. No. 659,053, type).

In the usual form of the purple-wreath, a common vine of tropical
America that often is cultivated for ornament outside its natural
range, the flowers are of a handsome blue color. I do not recall
any mention of a white-flowered form, although such a variant was
to be expected. The usual form of this plant is one of the handsomest
of tropical American shrubs, and it is to be assumed that the white-
flowered form likewise must be in no manner inferior to it in beauty,
and well worthy of introduction into cultivation.

Bacopa lacertpsa, sp. nov. — Herba perennis 30-60 cm. alta
erecta, caule simplici vel supra ramos paucos breves adscendentes
emittente subtereti glabro vel supra in partibus novellis sparse
brevissime villosulo, internodiis foliis brevioribus; folia opposita
sessilia carnosa rigida linearia plerumque 3-5 cm. longa 2-4 mm.
lata apicem versus longe attenuata basin versus sensim attenuata
crenatp-serrata glabra minute densiuscule punctata; flores axillares
solitarii, pedicellis usque ad 3 mm. longis crassiusculis sparse pilp-
sulis vel fere omnino glabris supra medium bibracteolatis, bracteolis
subulatis 1-2 mm. longis; sepala valde inaequalia, 3 exterioribus
foliaceis 5-7 mm. longis late ovatis acutis vel obtusis basi rotundatis
vel truncatis palmatinerviis scaberulo-ciliatis glanduloso-puncti-
culatis extus sparse minute pilosulis vel fere glabris, 2 interioribus
angustis carinatis; corolla alba breviter exserta; capsula ovoidea
4 mm. longa inclusa versus apicem attenuata. — British Honduras:
All Pines, in swamp, April 29, William A. Schipp 763 (Herb. Field
Mus. No. 641,525, type).

PLANTS OF BRITISH HONDURAS 141

In general appearance as well as in floral characters the plant
resembles Bacopa aquatica Aubl., in which the flowers are borne
on elongate pedicels.

Bacopa naias, sp. nov. — Herba aquatica perennis c. 30 cm.
longa, caulibus simplicibus adscendentibus teretiusculis fere 2 mm.
crassis striatis dense foliatis, nodis brevibus, superioribus sparse
minute puberulis; folia opposita sessilia amplexicaulia tripartita
1 cm. longa flaccida patentia, segmentis pinnatifidis, segmentis
ultimis graciliter filiformibus; flores axillares solitarii, pediceljis
gracilibus 2.5-6 mm. longis sparse minute puberulis vel fere glabris,
flpriferis adscendentibus, fructiferis reflexis, ebracteolatis; sepala
viridescentia linearia obtusiuscula 3 mm. longa erecta; corolla
caerulea, fauce lutea, glabra c. 4 mm. longa; capsula oblonga 2 mm.
longa. — British Honduras: All Pines, swampy places, common,
September 1, William A. Schipp 610 (Herb. Field Mus. No. 621,977,
type).

A relative of the Brazilian Bacopa reflexa (Benth.) Edwall, but
differing from that and related species by the extremely short
pedicels. A West Indian relative of Bacopa naias is the following:

Bacopa longipes (Pennell), comb. nov. Naiadothrix longipes
Pennell, Mem. Torrey Club 16: 105. 1920.

Petastoma caudiculatum, sp. nov. — Frutex alte scandens
usque ad 10 m. longus praeter flores omnino glaber, ramulis quad-
rangulatis ochraceis rimosis; folia 2-3-foliolata interdum cirrhifera,
petiolo gracili rigido 2-2.5 cm. longp; foliola subaequalia mem-
branacea lucida in sicco brunnescentia 1-2 cm. longe petiolulata
elliptico-oblonga vel late lanceolato-oblonga 4-12 cm. Tonga 2-6 cm.
lata abrupte vel rarius sensim longiacuminata, acumine ipso sub-
obtuso, basi obtusa vel interdum subcordata integra, nervis venulis-
que supra prominulis et pulchre reticulata, subtus vix pallidiora,
costa gracili elevata, venulis prominentibus reticulatis; inflorescentia
cymoso-paniculata foliis vix longior longe graciliter pedunculata
laxissime multiflora, bracteis minutis lanceolatis vel subulatis,
pedicellis gracillimis glabris plerumque 4-5 mm. longis; calyx fere
rotatus extus sparse minutissime puberulus vel glabratus 6-7 mm.
latus orbicularis remotissime 5-denticulatus, dentibus triangulari-
filiformibus vix 1 mm. longis; ovarium anguste ovoideum glabrum
1.5 mm. longum, stylo gracili glabro 15 mm. longo; capsula (perfecta
non visa) linearis yalde compressa ultra 16 cm. longa 1.5 cm. lata
glabra lucida. — British Honduras: Nine Mile, Stann Creek Railway,
altitude 30 m., in low swamp forest, rare, March 22, 1932, William
A. Schipp S297 (Herb. Field Mus. Nos. 657,811-812, type).

While this plant is properly referable with scarcely any doubt
to the genus Petastoma, the calyx is conspicuously unlike that of
other members of the group occurring in Mexico and Central

142 FIELD MUSEUM OF NATURAL HISTORY — BOTANY, VOL. XI

America. The collector states that the corolla is white and about
2.5 cm. long, but no corollas are present upon the type specimen.

Mendoncia belizensis, sp. nov. — Volubilis 18-metralis herbacea,
caulibus gracilibus dense pilis longis fulvis subadpressis pilosis,
internodiis foliis longioribus; folia opposita mediocria membranacea
breyiter petiolata, petiolo crassiusculo 7-10 mm. longo dense piloso;
lamina elliptica, oblongo-elliptica vel ovata 6-9 cm. longa 3-5 cm.
lata subabrupte acuminata, acumine triangulari attenuate, basi
rotundata, utrinque dense molliter fulvo-pilosa, pilis subpatentibus
vel ad nervos subadpressis, illis paginae superioris basi dilatatis,
nervis lateralibus utroque latere 4-5 valde obliquis subtus elevatis;
pedunculi axillares splitarii uniflori 2.5-3 cm. longi dense pilis longis
adscendentibus fulvis pilosi; bracteae anguste lanceolato-oblongae
subfalcatae 3 cm. longae fere 1 cm. latae attenuato-acuminatae
uninerviae dense subadpresse longipilosae; corolla coccinea extus
glabra tubo crasso 4 cm. longo 6-7 mm. lato, lobis ovalibus vel
rotundatis 4-5 mm. longis suberectis; fructus juvenilis dense hirtellus.
— British Honduras: Nineteen Mile, Stann Creek Valley, climbing
over forest tree on mountain slope, June 16, 1932, William A.
Schipp 961 (Herb. Field Mus. No. 657,807, type).

This is apparently the northernmost station known for a plant
of this curious enua. .

UK/SPY n

DEC 31 1932
UNIVERSITY OF ILLINOIS.

OF NATURAL HISTORY

MARSHALL FIELD, 1893

CATION 352

VOL. XI, No. 5

ORIGAN PLANTS— VI

>TANDLEY

dRIUM, DEPARTMENT OF BOTANY

CHICAGO, U.S.A.
FEBRUARY 10, 1936