640 CALIFORNIA ACADEMY OF SCIENCES. 



black and appressed hairs, lower side straight, upper side 

 a trifle convex, neither oblique nor obliquely attached; 

 calyx teeth equal, about i" long, subulate; sinuses except 

 the rounded upper one acute ; banner oval to oblong-oval, 

 ascending abruptly at calyx tips to 45°, sides reflexed at 

 point opposite the keel, %" wide, not at all at apex, which 

 is emarginate and rounded, erect part of banner 2" long, 

 sulcus reduced to a groove above but semicircular below 

 keel tip and ^" wide, white spot comes to within ^" of 

 the sides and ^" of the tip, obovate to fan-shaped, and 

 lacerate above by the intruding purple veins, which are 

 very fine, and unite below in twos, but do not form a 

 ring, white spot i" wide and i}4," long, all of the banner 

 is veined with dark purple; blade of the wings i|" long, 

 sometimes 1" wide, obliquely oblong, with narrowed tip, 

 but obtuse, left hand one spreading and concave to the 

 keel, and turned nearly horizontal, with the concave side 

 down, right hand one incurved over the keel tip and ^" 

 longer, light purple and with purple veins near the lower 

 side, keel much inflated near the cal3^x tips, but flat be- 

 yond and )4" longer, incurved to 100°, very obtuse, dark 

 purple; pods triquetrous, 1" thick, oblong, 4" long, acute 

 at each end, on a stipe '%." long, which is as thick as 

 long or nearly so, spreading, minutely pubescent, double 

 the calyx tube, which it splits as it matures. 



Astragalus ToliLcaniis Robinson & Seaton. Pringle, 

 No. 4238, on dry ridges under pines, Nevada de Toluca, 

 Mexico, 12,000° alt., September 6, 1892. With the in- 

 florescence of A. agrestis and the pods of A. aborigimun 

 nearly. Perennial, with many delicate, decumbent stems 

 from an erect root, 6' long or less; leaves 2-3' long, deli- 

 cate, thin, with very short petiole; leaflets 10-12 pairs, 

 2-3" long, i-i)^" wide, elliptical, obtuse, glabrous above, 

 puberulent below; root leaves smaller; lower stipules 



