28 SYNOPSIS OF THE FLOKA OF COLORADO. 



macrocarpa, Gr. PI. Fendl., p. 36.) Ashy-puberulent, glabrate, perennial; 

 stem fistulous, sulcate, branched, 2 long; stipules distinct, small; 

 leaflets 1-5, linear or filiform-linear, remote, the leaf sometimes reduced 

 to the flattened filiform rachis; racemes loosely many-flowered, on 

 long, strict, stontish peduncles; bracts one-half shorter than the pedi- 

 cels ; flowers white, pendent ; calyx-teeth broad-subulate, much shorter 

 than the tube; pod membranous, lanceolate-cylindrical, straight, I'-IJ' 

 long, very sharply acuminate at each end, exsertly stipitate, glabrous, 

 neither suture intruded. Wet Mountain Valley, Brandegee. 



ASTRAGALUS LEPTALEUS, Gr. Rev. 1. c., p. 220. Nearly glabrous, 

 stem slender, ascending, a span high; stipules long-subulate, sub con- 

 nate at base; leaflets 7-11 pairs, lance-linear or oblong, often acute; 

 peduncles 2-4 flowered, shorter than the leaves; calyx with short, 

 black hairs, the campanulate tube slightly exceeding the subulate teeth, 

 about equaling the pedicel and subulate bract; corolla 4" long, white, 

 the emargiuate banner a third longer than the violet-tipped keel ; pod 

 ovate or oval, 4" long, puberulent, chartaceous. Hall ct* Harbour, 141 ; 

 Brandegee. Sierra Madre Range, Coulter. 



ASTRAGALUS BISULCATUS, Gr. Rev. I. c., p. 221. Perennial, strig- 

 ulose-puberulent ; stein erect, over 1 high, stout ; stipules distinct, free; 

 leaflets oblong, often narrow, the lowest near the stem ; flowers violet, 

 in dense, spike-like racemes, middle sized, pendent or spreading, keel 

 nearly straight ; calyx-teeth setaceous, scarcely shorter than the cam- 

 panulate tube ; pod coriaceous, ' long, shortly exsert-stipitate, straight, 

 oblong, semi-cylindric, the deeply concave ventral surface- divided by 

 the salient, obtuse suture. Hall & Harbour, 130. Platte River, Coulter. 



ASTRAGALUS PECTINATUS, Dougl. Gr.Rev. I c., p. 221. Perennial, 1 

 high; stem and leaves rather rigid, ashy-puberulent, glabrate; branches 

 striate, angled; leaflets 4-10 pairs, nearly filiform, not jointed to the 

 rachis, persistent ; lower stipules connate ; flowers nearly I 7 long, white, 

 many, in a rather short raceme; keel nearly straight, banner elongated; 

 pod thick, cartilaginous, subovate or oblong, turgid, sessile or short- ped- 

 iceled, neither suture intruded, but both thick and prominent, 6" long, 

 pendulous, glabrous, cuspidate. Hall & Harbour. 134; Canby ; Dr. 

 Bell. 



ASTRAGALUS FENDLERI, Gr. Rev. 1. c., p. 224. Perennial, glab- 

 rous, or appressed-puberuleut, erect, over 1 high ; leaflets oblong or 

 linear-oblong; racemes long-peduncled, loosely flowered ; flowers pur- 

 ple ; pod oval, inflated, chartaceous-coriaceous, about I' long, straight, 

 pointed, minutely puberulent, very shortly stipitate. In New Mexico 

 and Colorado according to Gray's Revision, but not seen by us. 



ASTRAGALUS HALLII, Gr. Rev. l. c., p. 224. Subcinereous-pub- 

 escent, glabrate; stems rather stout, ascending; stipules subulate ; leaf- 

 lets 9-12 pairs, narrow, oblong, 4 // -7 // long, subcuneate, retuse; pedun- 

 cles exceeding the leaves; flowers violet, 20 or more in a dense head- 

 like raceme; calyx dark- pubescent, broad-campanulate, very gibbous 

 at base, 3" long, the rather obtuse, broad teeth, 3-4 times shorter than 

 the tube ; pod oblong, inflated, 1"-W long, glabrous, straight, pointed, 

 chartaceous-coriaceous ; stipe, 1" long. Hall & Harbour, 121 ; Canby. 

 Twin Lakes, Coulter. South Park, Porter. 



ASTRAGALUS FLEXUOSUS, Dougl. Gr. Rev. 1. c., p. 224. Ashy-pube- 

 rulent; stems ascending, 1 high, flexuose; leaflets oblong or cuneate- 

 linear, obtuse or retuse; peduncles exceeding the leaves; racemes 

 mostly elongated, loose ; flowers 4" long, white or purplish ; calyx hoary. 



