62 
BOTAKT. 
Mountains, and Ruby Valley, Nevada; 5-6,000 feet altitude; July. One of 
the most valuable of the western species. (246.) 
TrifoliUxM cyathiferum, Lindl. Annual, glabrous ; stems ascending, 
(6-18' long,) branched at base ; leaflets oblong and obovate, cuneate, mucron- 
ate, spinulose-serrate ; stipules' somewhat scarious, ovate, laciniate-toothed; 
peduncles long ; involucre large, (6-8" in diameter,) cyathiform, the border 
obtusely many-toothed, somewhat shorter than the few- or many-flowered 
heads ; calyx oblong, subinflated, membranous, with teeth setaceously 3-many- 
parted, equaling the corolla; legume 2-seeded. — Oregon, (Douglas and Gey er,) 
and in the Eocky Mountains, (Nuttall.) Found in the Truckee Valley and on 
stream banks in the Havallah and East Humboldt Mountains, Nevada; 
5-6,000 feet altitude ; June, July. (247.) 
Trifolium gymnocarpon, Nutt. Perennial, csespitose, (2-4' high,) 
minutely pubescent or hairy; caudex short and thick, many -branched ; leaves 
radical, on long petioles, exceeding the peduncles ; leaflets (3-6" in length) 
oval-oblong, obtuse or acute, serrate; stipules scarious, oval; heads 2-6-flow- 
ered, not involucratc ; flowers on short pedicels ; calyx-teeth subulate, equahng 
the subcampanulate tube and half the length of tlie corolla; legume coriaceous, 
globose, (2-3" long,) hairy, 1-2-seeded, upon a stipe about equahng the calyx- 
tube, dehiscent. — Collected only by Nuttall near the sources of the Sweet- 
water, in Wyoming Territory. Found growing under sage-brush on the foot- 
hills of Parley's Park in the Wahsatch ; 6,500 feet altitude ; June. Plate 
VIII. Fig. 1. An entire plant ; natural size. Fig. 2. Matured legumes ; en- 
larged two diameters. (248.) 
HoSACKiA ARGOPHYLLA, Gray. Sjjnojms of Hosackia, Proc. Acad. Phil.., 
1863, p. 347. Perennial, somewhat shrubby or nearly herbaceous, densely 
silky-tomentose, the long and rather silky branches decumbent ; leaflets 3-5, 
obovate, obtuse, 3-6" long, the common petiole and rachis very short ; 
umbels 8-12-flowered, with a simple bract, capitate, the peduncle short or 
occasionally exceeding the leaf ; calyx-teeth slender, about half as long as the 
cylindrical tube ; flowers 4-5" long, yellow or becoming reddish, the broad 
incurved apex of the keel obtuse ; legume small, attenute above, incurved, 
1-4-seeded. Southern and Middle California. — Var. (?) Fremonti, Gray. 
Leaflets obovate-oblong, acute ; flowers 5" long; calyx-teeth setaceous, nearly 
equaling the tube. Found east of the Sierras by Fremont, probably in 
Nevada. 
