20 
BOTANY. 
Nevada, (rare,) and in the Wahsatcli and Uintas ; 7,000 feet altitude ; 
June-September. (79.) 
Cardamine iiirsuta, L. The Atlantic States to Florida, and from Canada 
to Colorado and Northern California, northward to the Arctic Sea. In the 
Wahsatch and Uinta Mountains, Utah, and in Goose Creek Valley, North- 
eastern Nevada ; G-7,000 feet altitude ; June-September. (80.) 
Platyspermum^ scapigerum, Hook. Annual, low, (2-3' high,) glabrous; 
leaves radical, runcinate-pinnatifid ; scapes numerous, 1-flowered ; petals 
white. — Collected by Douglas and Geyer on the Columbia River Now found 
at the Steamboat Springs, near Washoe City, Nevada. In fruit; May. (81.) 
Vesicaria MONTANA, Gray. Proc. Acad. Phil, March, 1863, p. 58. 
Hoary, with a silvery pubescence ; root perennial ; stems diffuse, decumbent, 
leafy ; leaves spatulate, radical ones subovate, petioled, sometimes with 1-2 
teetli ; raceme elongated in fruit ; pod oval or oblong, pubescent, longer than 
the slender style, and a little longer than the spreading curved pedicel. — 
Seeds 2-6 in each cell, wingless ; petals spatulate, light yellow ; filaments 
filiform. Subalpine ; found by Hall & Harbour in Colorado ; not rare in 
the East and West Humboldt Mountains, Nevada, and in the Wahsatch ; 
9-10,000 feet altitude ; June-August. (82.) 
Physaria^ didymocarpa, Gray. {Vesicaria, Hook.) Radical leaves 
broadly obovate-spatulate, occasionally lyrate ; cauline lanceolate-spatulate, 
mostly entire ; silicpies large, globose-didymous, deeply emarginate above and 
below. — A low decumbent profusely branched perennial '; the showy oblong- 
spatulate petals exceeding the oblong sepals ; silicles varying in size, (2-6" in 
diameter,) the lobes usually approximate, sometimes considerably divergent ; 
the septum J-1 J" long. From Colorado to Oregon and north to lat. 57°. In 
the East and West Humboldt Mountains, Nevada, and in the Wahsatch and 
Uintas ; 6,500-9,000 feet altitude ; June, July. (83.) 
Draba alpina, L. Somewhat rigid; scapes naked, mostly somewhat hir- 
sute ; leaves spatulate-lanceolate, plane, more or less pilose with branching 
hairs; petals (yellow) more than twice the length of the calyx; silicles some- 
what corymbed, oblong-elliptical; style very short.— North Greenland and 
PLATlSPERMLM,PIooK. Sepals equal, spreading. Petals obovate, subaessile. Pods orbicular 
much compressed, li a hyaline septuua ; valves flat ; stign.a se.sile, simple. Seeds few, orbicular wS 
a broad margin and slender seedstalk ; cotyledons accumbe„t.-A low annual. Be>.xh. '& Hook 
r f ^^'T-r- . Cliaracters as in Vesicaria, (to which it is referred by Benth. & Hook \ but 
the sihcle dulymous, much mHated, membranous; the cotyledons contrary to the narrow septum 
