74 SELECTED WESTERN FLORA 



3. A. adsiirgens, Pall. 



Ascending or decumbent, minutely pubescent or glabrate ; leaflets 16-25, 

 linear-oblong; peduncles exceeding the leaves; floWers purplish, in dense 

 short spikes; pod sessile, pointed, coriaceous, deeply furrowed on the back. 

 Moist prairie, common, Man.-Alta. 



4. A. hypoglottis, L. 



Resembling the preceding, but more diffusely branched ; pod membran- 

 ous, oblong, and densely villous. Dry prairie, Man.-Alta. 



tt Pod incompletely 2-celled. 



5. A. racem6sus, Pursh. 



Erect or ascending, 1-1^ ft. high, finely pubescent, branched at the base, 

 somewhat zigzag; leaflets 17-21, linear-oblong; peduncles equalling or 

 ' exceeding the leaves; flowers long, yellowish white, in a loose raceme or 

 spike; pods stalked, triangular in section, imperfectly 2-ceIled by the intru- 

 sion of the dorsal suture. Prairies, S. Man. and S. Sask. 



6. A. lotifldrus. Hook. 



Low, gray with appressed hairs; leaflets 7-13, lance-oblong; flowers 

 yellowish white, in few-flowered heads; peduncles may or may not exceed the 

 leaves in length; pod sessile, oblong-ovate, villous-pubesoent, slightly keeled 

 and often curved along the dorsal suture, ventral suture nearly' straight. 

 Rather rare, Man.-Alta. 



ttt Pod not at all 2-cellbd. 



7. A. Drumm6ndii, Dougl. 



Erect, 1-2 ft. high, growing in clumps, loosely woolly-pubescent; leaflets 

 19-33, rounded or obtuse at the apex, tapering to the base; flowers yellowish 

 white, the keel often tinged with purple, in somewhat loose spikes, the 

 peduncles equalling or frequently exceeding the leaves in height; pod 1-celled, 

 talked, pendent. Cypress Hills, Red Deer Hills, Hand Hills; probably 

 hilly regions generally. > 



8. A. pectin&tus, (Hook.) Dougl. / 



Ascending, 10-18 in. high, much branched, canescent or glabrate; leaflets 

 11-21, very narrowly linear; peduncles may or may not exceed the leaves ; 

 flowers yellowish white, in loose spike-like racemes, standard much longer 

 than the wings or keel; pod 1-celled, sessile, oblong, leathery in texture, 

 keeled on the upper suture and terminating in a long point. 



9. A. aborigindrum, Richards. 



Erect, 6-12 in. high, somewhat branched, canescent with fine appressed 

 hairs, or glabrate; leaflets 7-13, linear or oblong; flowers white, tinged with 

 purple or violet, in loose racemes, the peduncles exceeding the leaves in 

 height; pod 1-celled, inflated, on a long stipe, dorsal suture slightly intruded. 

 On gravelly ground across the prairies and far north. 



