ASTRAGALUS. LEGUMINOSA. 151 



thick-coriaceous, sessile, ovate-oblong, acuminate, somewhat arcuate, 

 terete or somewhat obcompressed and frequently sulcate ventral ly, ru- 

 gosely reticulated and subpubescent, 1-celled, many-seeded. Idaho to 

 New Mexico and Arizona. 



A. reventus Gray 1. c. xv, 46. Stems short, numerous, from a thick 

 perennial root, much branched from the base, glabrate : stipules scarious, 

 connate lanceolate, 2-3 lines long ; leaves numerous, 4-6 inches long or 

 more, leaflets 21-23, linear-oblong to oblong, emarginate, pubescent be- 

 neath, smooth above, 5-6 lines long: peduncles at length exceeding the 

 leaves ; flowers whitish, in a dense short-oblong raceme, erect in bud but 

 soon reflexed; bracts scarious, triangular, a line long or more, a little 

 longer than the pedicels; calyx campanulate, pubescent with blackish 

 hairs, its subulate teeth not more than half as long as the tube : pods ses- 

 sile or nearly so, erect on stout pedicels, cartilaginous, reticulated, 8-10 

 lines long, glabrous, ovate-oblong, turgid, acuminate, obcompressed but 

 the sutures prominent, several-seeded. Open plains and hillsides, eastern 

 Oregon and Washington. 



A. conjunctus Watson Proc. \m. Acad, xvii, 371. Stems short, nu- 

 merous, from a stout perennial root, erect or assurgent, sparingly ap- 

 pressed-pubescent : leaves 6-12 inches long ; leaflets 11-21, on an elongated 

 rachis, linear, 4-6 lines long: peduncles elongated, 6-12 inches long, but 

 little or not at all surpassing the leaves, bearing an open few-flowered ra- 

 ceme; bracts subulate, about equalling the very short pedicels; calyx 

 narrowly tubular, 3-4 lines long, pubescent with dark-colored hairs, the 

 narrow teeth not half as long as the tube ; petals purple, 6-8 lines long : 

 pods erect, sessile, coriaceous, rugose narrowly oblong, nearly straight, 

 acuminate, 1-celled, the dorsal suture impressed, 9-12 lines long. On dry 

 rocky ridges, John Day valley, Eastern Oregon. 



A. Hoodianus Howell Eryth. i, 111. Canescent with a short ap- 

 pressed pubescence : stems strictly erect, 4-6 inches high, from a stout 

 perennial root ; leaves 6-8 inches long; leaflets 21-29, linear to narrowly 

 lanceolate, very shortly petiolulate, 6-8 lines long; stipules subulate, 3-4 

 lines long; peduncles very stout, 10-16 inches long; flowers whitish, in a 

 rather short raceme, 8-10 lines long ; bracts setaceous, twice as long as the 

 stout pedicels ; calyx cylindrical, 4-5 lines long, pubescent with white ap- 

 preased hairs, its setaceous teeth nearly as long as the tube : mature pods 

 pubescent, oblong, shortly acuminate, sessile, 8-10 lines long, erect. Open 

 woods and plains, Oregon and Washington, near The Dalles. 



A. Palousensis Piper Bot. Gaz. xxi, 489. Perennial, from a stout 

 woody caudex : 16-24 inches high, simple, or branched above, striate, 

 sparingly pubescent with short appressed hairs, these white below and 

 blackish above : leaves 4-8 inches long; stipules deltoid-acuminate ; leaf- 

 lets 25-31, elliptical or lanceolate, obtuse or truncate, appressed-pubescent 

 beneath, glabrous above, 6-10 lines long, nearly sessile: petioles sparsely 

 hirsute; racemes elongated, 3-7 inches long, flowers 20-25, erect on short 

 pedicels, 8 lines long ; bracts lanceolate, shorter than the calyx : calyx 

 obliquely campanulate, the slender teeth nearly as long as the tube, pu- 

 bescent with short appressed black hairs : corolla pale yellowish, with or 

 without a black spot on the lateral petals : pods 10 lines long, crustaceous, 

 narrowly oblong, tipped with a slender short beak, its surface transversely 

 reticulated and sparsely pubescent with short white hairs, on a stipe as 

 long as the calyx tube or shorter. Common on rich loess hillsides -about 

 Pullman, Washington. 



§ 13. Podo-sclerocarpi Gray 1. c. 225. Pod thick-cartilagi- 

 nous or coriaceous, exsertly stipitate, compressed or turgid, in- 

 curved; sutures not intruded, sometimes thickened and separat- 

 ing from the valves. Perennial, branched, ashy-puberulent ; sti- 

 pules small, distinct. 



