35 



to the ventral as a partition and making the pod 2- celled (a sin- 

 gle seed in each cell), pod 4-5 mm. long, about 2 mm, wide, mi- 

 nutely appressed-pubescent. papery and rather strongly nerved. Si- 

 erra de Parras, Coahuila Mexico, July 19] 0, 9,000 ft. alt., C. A. 

 Purpus. 



Astragalus Pueblae n. sp. 



Stems filiform and several to many, much branched throughout 

 from an apparently perennial root, widely spreading or decum- 

 bent after the fashion of A. Nuttallianus and much resembling it 

 in habit. Stipules adnate, rot connate, rather large, triangular, 

 green. Leaves filiform, 5-7 cm. long, ashy with short and ap- 

 pressed hairs, lax. Leaflets 4-5 pairs, about 1 cm. long and 1 mm. 

 wide, folded, linear, petiolulate, the pairs distant about their own 

 length, Petioles ^-£ the whole. Peduncles nearly erect, about as 

 long as the leaves, filiform, ending in a dense round head of about 

 10 reflexed flowers. Bracts minute, searious, persistent. Pedicels 

 filiform, about 2 mm. long, reflexed with a^re, black-hairy with 

 short and appressed hairs like the calyx. Calyx cam pa nutate or 

 obconic, not noticeably oblique nor compressed, about 2 mm. 

 long, the narrowly triangular teeth about half as long and erect, 

 the lower teeth somewhat the longer. Flowers about 5 mm. long, 

 broad. Banner white, broadly oblong and strongly notched, with 

 closely reflexed sides, about 3.5 mm. long, arched to 45° abruptly 

 at cahx tips, wings obliquely ovate, large for the flower, about 1 

 mm wide and 1 mm . longer than the keel, purple-tipped. Keel 



a little declined, ^-deltoid -ovate, about 2 mm. long, purple, the 

 straight not erect tip very broid and barely acute. Pods sessile, 

 brodaly linear, a little wider above, about, 8 mm. long, 3 mm. wide 

 and hardly L mm. thick, laterally much co up reused, papery, not 

 inflated, deltoid-apiculate, rounded at both ends, somewhat canes- 

 eent with minute white hairs, cross section cordate-triangular, 

 both sutures prominent but not produced (pod wholly 1-celleb), 

 ventral suture straight to near the tip then convex, dorsal suture 

 inflexed £-£ by a'strong sulcus which stops short of tip of pod. 

 This belongs to the parvus group. No. 5045 Purpus, Esperanza, 

 Pueblo Mexico, Sept. PHI 



Pentstemon aboriginum. P. calcareus Jones Cont 12 69, not 



Brandegee. 



Asclepigs Tapalpana. A. Jaliscana Jones Cont. 12 49, not A 

 Jaliscana Robnisou. A friend has called my attention to these du- 

 plications 



ARAB1S. 



A recent examination of this genus in the light of Watson s 



