72 BOTANY. 



setaceous, one-tMrd as long as the tube ; keel elongated, nearly straight, 

 slightly arched at the apex, a little shorter than the wings and banner ; 

 legume 1-1 i' long, firmly coriaceous, sessile, densely silky-hirsute, trans- 

 versely rugose, oblong-lanceolate, arcuate, obcompressed with approaching 

 sutures at the base, but becoming compressed with prominent sutures towards 

 the apex, 1-celled, many-seeded. — Found on the foot-hills of the Trinity and 

 of the East and "West Humboldt Mountains, Nevada ; 5-6,000 feet altitude ; 

 April-July. With exactly the habit of A. Shortianus and also near to glareosus, 

 but distinguished from both by the very hirsute legume. The pubescence 

 is less straight and silky than in Shortianus, and on the other hand less 

 woolly than in Purshii and Vtahensis. (273.) 



Astragalus Purshii, Dougl. Crrai/s Rev., I. c, 212. Nearly acaules- 

 cent (rarely 6' high,) canescent with a long and dense woolly pubescence ; 

 peduHcles short (2-3 high ;) leaflets 5-8 pairs, lanceolate or oblong, 3-5" 

 long ; flowers |-1' long, ochroleucous, with the keel sometimes purplish ; 

 legume as in the last, but usually smaller, (f long,) less arcuate, and with a 

 more woolly pubescence. — From Green River in Wyoming, Territory west 

 to the mountains of California and Central Oregon. Frequent in Nevada 

 from the Washoe to the East Humboldt Mountains ; 5-7,000 feet altitude ; 

 April-July. (274.) 



Astragalus Utahensis, T. & G. Gray's Rev., I. c, 213. Very near to 

 the last, from which it differs in being subcaulescent with the short stems 

 (2-6' long) prostrate, in its suborbicular leaves, (2-4" in diameter,) in its 

 usually dark-purple flowers, and in its softer and more dense appressed woolly 

 pubescence. Reported only from the shores of Salt Lake, but found in the 

 Virginia and East Humboldt Mountains, Nevada, as well as on Antelope 

 Island and in the Wahsatch; 4,500-6,000 feet altitude; May-August. (275.) 



Astragalus Geyeri, Gray ; I. c, 214. Annual, low, (3-6' high,) some- 

 what simple, subcanescent, with an appressed hairy pubescence ; leaflets 

 linear or oblong, obtuse, glabrous above ; peduncles shorter than the leaves, 

 few-(3-5-)flowered ; corolla 3" long, ochroleucous; calyx-teeth subulate, 

 about equaling the short campanulate tttbe ; legume 8-9" long, membranous, 

 inflated, ovate-lunate with an incurved acumination, sessile, not mottled, 

 finely reticulated, glabrous, 1-celled. — Collected by Geyer on the Upper 

 Platte ; also by Douglas and Gordon. Found on the foot-hills of the Trinity 



