[ 174] 94 
Polemonium caeruleum, (Linn., Hook.) Red Buttes on the Upper North fork of the Platte, hie 
mile, (Hook.) Highest parts of the mountains, near perpetual snow, August 13- 
Gilia (Cantua) longiflora, (Torr.). Sand hills of the Platte. September 16. 
. pulchella, (Dougl.) Upper part of the Sweet Water, near the mountains. August 7-20. 
inconspi Dougl.?) Goat island, Upper North fork of the Platte. July 30. This differs 
—- the Oregon plant in its fleshy, simply pinnatified leaves, with ovate, obtuse segments. 
CONVOLVULACE. 
Cia sepium, a Br.) | Forks of the Platte. July 2. 
Ipomes leptophyilla, n. sp. Stems branching from the base, prostrate, glabrous, angular; leaves 
lanceolate-linear, very acute, entire, attenuate at the base into a petiole; peduncles ‘1 to 3-flow- 
ered; sepals roundish-ovate, @btuse with a phous Hae —Forks at a ee to —— 
river. July-4-September 3. i t 
the Canadian, by Dr. James, in Long’s expeditions but | they ‘were ‘not described in my account 
of his plants. The root, according to Dr. James, is annual, producing numerous thick pros- 
trate, but not twining stems, which are two feet or more in length. The leaves are from two _ 
to four inches long, acute at each end, strongly veimed and somewhat ‘coriaceous. Peduncles 
an inch or more in length; those towards the extremity of the branches only 1-flowered; the 
lower ones bearing 2, 3, and sometimes 4 flowers; which are nearly the size of those of calys~ 
tegia sepium, and of a purplish color. Sepals appressed, about five lines long. Corolla cam- 
panulate—funnel form, the tube much. longer than. the calyx. Stamens inserted near the base 
of the corolla; filaments villous at the base; anthers oblong- ber large. Style as long as the 
‘stamens; stignia 2-lobed; the lobes capitate. Ovary 2-celled, wi two dvules in each cell. 
SOLANACE Zi. : oe 
Nycterium luteum, (Donn cat.) South fork of the Platte. July 4. 
Physalis pubescens, ( Willd.) Upper North fork of the Platte. July 23. 
P. pumila, (Nutt.) With the preceding. 
GENTIANACE. 
Gentiana malephili # cated (Griseb.’ in Hook. Fi. Bor. Am. ii, page 61.) Sweet Water 
of the Platte. August 4. 
G. affinis, (Griseb.) North fork of the Platte. September 9. 
G. pneumonanthe, (Linn.) Laramie‘ river to Little Sandy creek, in the mountains. July 12~ 
August 8 
e Fremontii n. sp. Stem branched at the bee branches 1-flowered; leaves ovate, cuspidate, 
on the margin, erect; corolla funnel-form; plicee small, slighty 2-toothed; cap- 
“ale ovate, at length entirely exserted on its thick stipe.—Wind river Seletee eee 
— : ai 
ish” border, ' r than ternodes. 
“S08G. priatrate: pe tametous: Calyx two-thirds the length of thi dolla the teeth about ¢ 
“ thitd the length of the tube.’ Plice of the corolla scarcely one-third as long 2s. the lanceolate 
Gi Sie) tac, ite BIS ee In G. humilis, and in the allied 
G. Ciel: So. 2 iene ponies 
