Contribution* to Western Botany. 21 



the peduncles, minutely and sparsely pubescent with fine ap- 

 pressed hairs fixed by the base; stipules triangular, adnate, not 

 connate, small, about a line long; stems bent at all the nodes 

 from which peduncles arise, since the latter are nearly as stout 

 as the stems they appear terminal and erect; leaves about 4 inches 

 long with a slender petiole 6 to 12 lines long, appressed; leaflets 

 10 to 14 pairs, oblong-elliptical, obtuse to refuse, 4 lines long, 1 

 to 1^4 lines wide, long-petiolulate, opposite, tapering from the 

 middle of the rachis to the tip, flat, distant; leaves mostly 

 clustered at the top of the stems by the shortening of the upper 

 internodes; peduncles about a foot long, strict, racem'osely few- 

 flowered above on the upper }i of the peduncle; bracts subulate* 

 1 to ij4 lines long; pedicels a line long, rather stout, spreading 

 in flower and reflexed in fruit, black-hairy; calyx nigrescent, 

 hyaline, sbort-cylindric, 2 lines long, a little oblique below and 

 thickened at the lower corner at insertion of pedicel; teeth 

 subulate, a line long; mouth not oblique; flowers are like A. 

 filipes, white, 6 lines long, blades about 4 lines long; keel arcuate 

 nearly equally from base to apex, lunate, obtuse or tip sharply 

 erect, about }i a line high; wings narrowly oblong, % line longer 

 than keel, about a line shorter than the ovate banner which is 

 arcuate from the end of the calyx tube to nearly ^ circle and 

 equally so throughout, sides reflexed much at the tip which is 

 narrow; keel not dark tipped; pods narrowly linear, fully 2 

 inches long, ij4 lines wide, cross section round, gladiate, about 

 the shape of pods of Brassica alba but narrower, acuminate at 

 both ends, at the tip the dorsal suture is nearly straight and the 

 ventral narrowed to it, at base the opposite is the case, dorsal 

 suture the more arched, pod almost straight when ripe, ventral 

 suture prominent externally, and thick at base, where it forms a 

 stout stipe fully as long as the calyx, pods sulcate dorsally with 

 a shallow and narrow grove, mature pods compressed and cross 

 section obcordatetriangular with concave sides, many seeded, 

 fully 2-celled, nearly glabrous, chartaceous, not fleshy, ventral 

 suture the more arched at maturity. This is a unique Astragalus 

 not closely related to any known species, somewhat resembling 

 A. Congdoni and with the habit of A. Laynese. 



