CATALOGUE. • 31 
3-lobed at the apex, with a broad ciliated petiole ; lobes rounded, obtuse ; 
scapes scarcely exceeding the leaves, 1-5-flowered ; flowers unknown ; pods 
ovate, narrowly bidentate above, a line in length, thrice longer than the 
style ; cotyledons accumbent.— Whole plant scarcely an inch high, in dense 
mats, the caudex branching into numerous heads, each terminated by a 
crowded cluster of small leaves. On a dry gravelly knoll at the head of 
Holmes Creek, Nevada; 6,000 feet altitude; September. Plate IV. Fig. 
5. A branch ; natural size. Fig. G. A branchlet ; enlarged two diameters. 
Fig. 7, A leaf ; enlarged four times. (127.) 
Thlaspi alpestre, L (?) Perennial, glabrous ; stems ascending, •]-12' 
high, simple ; radical leaves petioled, ovate or obovate, entire or denticulate, 
the caaline ovate or oblong, cordate-clasping ; racemes crowded or usually 
elongated and loose, i~G' long; flowers rather large, the petals 1-3" long ; 
pods 2-4" long, acnt(dy margined Init not winged, short-oblong, cuneate at 
base, emarginate, truncate, or rounded at the apex, 4-8-seedcd ; style 
long.— Usually referred to T. cochkariforme, DC, and including T. Fendkri, 
Gray, but the same as European and Tibetian specimens of T. alpestre^ ex- 
cept in its usually larger flowers. In the Rocky ^fountains, from the head- 
waters of the Columbia to New Mexico. Frecpient in tlie East Humboldt 
and Clover Mountains, Nevada, and in the Wahsatch and Uintas ; 8,500-11,000 
feet altitude ; July-September. (128.) 
Thysanocarpus^ elegaxs, Fisch. & ]\rey. Leaves oblong-lanceolate, 
radical ones pinnatiful oi" repandly toothed, tlie eauline niostlv entire and 
sagittate-clasping; silicles orbicular-ob()vai<», [)lan()-c()nv(»x, broadlv winged, 
obscurely crenate, the margin entire or pei-lbrated, not marked ])v elevated 
radiating veins. — Stem 1-2^ high, branche<l al)ove ; (|nite varial>lc in foliage, 
pubescence, and development of llie wing. The species d(jiil)th\ss includes 
T. curvipes, Hook., and T. imlchellus, F. & M. T. radians, Beiith.. is clearlv 
distinct, as also T. laciniatus, Nutt., (which probably should include T.crena- 
tus,) 'ATV(\ T. pusilius, Rook, {^T. ohlongiJoUu.% Nutt.) Califoi-nia' and Ari- 
zona, north to the Columbia. Near Carson City and in the AVest Tlund)ohlt 
Mountains, Nevada; 5,000 feet altitude ; April-June. (120.) 
'TIIYSAN(')L'Ai K. I'l tal- Miiiili. tr, .,l,ov.itf. nr (.i l.icnhn-, iinicli compressed, 
1-celk'd, indelii;;cf ut, im in ^ >i;>ly w in-.d ; -tylt' tiliionii. St cd in-iidiiloiis, wiiiolcss ; < <)ty ii dniis accum- 
bent or obliquely inonrabeiit. — Sli ndcr br.'iiiclit'd amui.-d^ : llowcis siii.ill. nifcjiicd, ou lililbrm pedicels 
whicli arc iioddinii; in fniif. lir.Mii. I'v. Hook. 
