SYNOPSIS OF THE FLORA OF COLORADO. 29 



pubescent, teeth 3 times shorter than the tube ; pod cylindric, 8"-ll" 

 long, 2" broad, puberulent, thinly coriaceous, straight or sub-incurved ; 

 stipe very short but evident. Common at middle elevations. Hall & 

 Harbour j 11^ -j Dr. Smith; Canby ; Porter; B. H. Smith : Brandegee ; 

 Median; Coulter. 



ASTRAGALUS MULTIFLORUS, Gr. Rev. I. c., p. 226. (A. nigrescens, 

 Gr.) Perennial, somewhat glabrous; stems 1 high, numerous, ascending, 

 branched; stipules dark-colored, the lower ones at least sheathing ^ 

 leaflets 6-10 pairs, 3"-6" long, linear or narrowly oblong, acute or ob- 

 tuse; peduncles not exceeding the leaves, loosely few-flowered ; flow- 

 ers ochroleucous, tinged with purple, small, 2 // -3 // long, the campanu- 

 late calyx-tube rather longer than the setaceous teeth, and about equa- 

 ling the stipe ; pod vetch-shaped, flattened or compressed, straight, mar- 

 gined by the nerve-like sutures, 4 // -6 // long, reflexed, 1-celled, 2-4-seeded. 

 Hall & Harbour, 115. South Park, Porter. Sierra Madre Bange, 

 Coulter. 



ASTRAGALUS CAMPESTRIS, Gr. Rev. 1. c., p. 229. Perennial, mi- 

 nutely pubescent or glabrate; stems 3'-15' high, numerous, ascend- 

 ing, slender, simple ; stipules, at least the lower ones, membranous and 

 sheathing, large, acuminate; leaflets 5-9 pairs, 3"-15" long, linear, 

 linear-lanceolate or oblong, usually acute ; peduncles slender, exceeding 

 the leaves, 5-10-flowered, flowers sub capitate or scattered, 4" long, 

 ochroleucous, tinged with purple, the keel with a purple, long and nar- 

 row inflexed tip; pod 6 // -12 // long, chartaceous, not stipitate, sub- 

 puberulent, subco in pressed, oblong-linear, nearly straight, valves sub- 

 turgid, the pedicels at length reflexed, 1-celled, 10-15-ovuled. Meehan. 

 Ute Pass, and on the Upper Arkansas, Porter. Mount Lincoln, Coulter, 



ASTRAGALUS DECU^IBEXS, Gr. Rev. I. c., p. 229. (Homalobus de- 

 eumbens, Xutt .) Cinereous or silky-pubescent ; stems diffuse or ascend- 

 ing, 6'-10' high; petioles sometimes somewhat flattened, mostly with 

 7-13 linear-lanceolate, acute leaflets ; racemes 5-10-flowered; calyx-teeth 

 attenuate, a little shorter than the tube ; corolla 4"-4J" long, ochro- 

 leucous or purplish; keel with a short, inflexed tip; pod broad-linear, 

 straight or falcate, about V long, hoary-puberulent. Hall d* Harbour, 

 142. Idaho Springs, Redfield. 



ASTRAGALUS DIVERSIFOLIUS, Gr. Rev. I. c., p. 230. Ashy-strig- 

 ulose; stems diffuse, decumbent, elongated, about 1 high; petioles 

 short, flattened, 1-5 foliolate ; terminal leaflet or simple leaf linear, 

 elongated, l'-2', attenuated at each end; peduncle 1-5-flowered; calyx- 

 teeth half shorter than the tube ; corolla ochroleucous or lurid, keel 

 falcate-incurved ; legume oblong-linear, straight or subfalcate, f long, 

 canescent-puberuleut. " Gravelly plains of Colorado on both sides of 

 the Rocky Mountains,' 7 Gratfs Revision. 



ASTRAGALUS JUNCEUS, Gr. Rev. 1. c., p. 230. Perennial, minutely 

 pubescent or subglabrous ; stems usually solitary, erect, paniculately- 

 branched, slender ; stipules small ; petioles slender, sometimes 6' long, 

 usually naked or with 1-5 pairs of linear leaflets; peduncles longer than 

 the leaves, 3-7-flowered; flowers 4" long, distant, ochroleucous or tinged 

 with violet; calyx- teeth usually small and obtuse, shorter than the cam- 

 paimlate tube; pod I'-IJ' long, as in the last species, with which it is 

 probably identical. u On the head- waters of the Colorado of the West," 

 Parry. 



ASTRAGALUS SIMPLICIFOLIUS, Gr. Rev. I. c., p. 231. (Pliaca sim- 

 plicifolia, Xutt.) Perennial, c^spitose, in dense, cushioned mats ; leaves 

 "-5" long, hoary with an appresse 1 silky pubescence, simple, linear or 



