CATALOGUE. 77 



(Parry) and Western Wyoming, (Nuttall.) East Humboldt Mountains, Ne- 

 vada, and in the Wahsatch, Utah ; 6-9,000 feet altitude ; June-August. 

 This species should include A. diversifolius, Gray. (288.) 



Astragalus simplicifolius, Gray ; /. c, 231. Perennial, caespitose in 

 dense cushioned mats ; leaves 4-5" long, hoary with an appressed silky pu- 

 bescence, simple, linear or spatulate-lanceolate, acute, frequently involute, 

 crowding the extremities of the numerous short (i') branches ; scapes scarcely 

 exceeding the leaves, 2-3-flowered ; flowers 3" long, purple, the banner and 

 wings longer than the strongly arched keel ; calyx-teeth nearly equaling the 

 obconical tube ; legume 4" long, half included in the calyx, oblong, acute, 

 subcompressed, glabrous, thick and coriaceous, 1-celled, the ventral suture 

 straight and very acute, the dorsal gibbous, about 12-ovuled. — Collected only 

 by Nuttall near the sources of the Platte. Found near Wahsatch Station on 

 the Union Pacific Railroad, on the summit of the divide between the Weber' 

 and Bear Rivers ; 7,000 feet altitude ; May-July. Plate XII. Fig. 3. 

 A stem ; natural size but unusually large. Fig. 4. Calyx ; enlarged eight 

 diameters. Figs. 5-9. Parts of the flower ; enlarged four diameters. (289.) 



AsTEAGALUS Kentkophyta, Gray; /. c, 231. Perennial, caespitose, 

 hoary with a short silky pubescence ; stems 2-4' long, numerous and branch- 

 ing, prostrate, rigid ; stipules membranous, mostly connate, often setaceously 

 or spinosely acuminate ; leaflets 2-3 pairs, 2-4" long, linear-subulate, usu- 

 ally rigid and divaricate, pungent, not jointed with the rachis; flowers 2" long, 

 upon short pedicels (1-3) in the axils of the leaves, ochroleucous or tinged 

 with violet ; calyx-teeth setaceous, equaling the campanulate tube ; legumes 

 2-3" long, subchartaceous, sessile, pubescent, ovate, acuminate, subcom- 

 pressed, somewhat incurved, 1-celled, 3-4-ovuled, 1-2-seeded, the valves 

 separating at maturity. — New Mexico, (Inscription Rocks, Bigelow,) Colo- 

 rado, and Wyoming. On dry barren hillsides in Monitor and Holmes Creek 

 Valleys, Nevada ; 5-6,000 feet altitude ; June-September. (290.) 



Var. elatus. Stems elongated and erect, 6-18' high, scarcely branched ; 

 not otherwise different from the usual prostrate form. Holmes Creek Valley, 

 Nevada; September. (291.) 



Oxyteopis campestris, L., Var. viscida. {O. viscida,'^\i.it) Hairy 

 and viscid throughout with a resinous exudation ; scapes 3-4' high, equahng 

 the leaves ; keel tipped with purple.— Collected by Nuttall near the sources 

 of the Columbia. Specimens in Herb. Gray, of Bourgeau's from the Rocky 



