130 Alpini. 



and very oblique, the tip abruptly hooked and deltoid and ending in 

 the long subulate style which is at right angles to the body, the 

 ventral suture very concave, and the dorsal suture arched to a half 

 circle and mostly sulcate to the middle and the suture a trifle pro- 

 duced as a thin edge, pod about 3 mm. high, rarely reflexed, very 

 short-stipitate, puberulent, with ventral suture a mere line. Flowers 

 white, veined with purple, about 5 mm. long, generally 2 at the end 

 of the capillary peduncle. Banner nearly round, about 5 mm. long ab- 

 ruptly arched at end of calyx tube to erect or more, deeply notched, 

 with sides but little reflexed. Wings broadly oblanceolate, 2 mm. wide, 

 much arched and nearly as long as banner. Keel oblong and incurved to 

 nearly a half circle from the base, much shorter than the wings and 

 barely surpassing the calyx teeth, purple, much rounded at tip and up- 

 per corner about square. Calyx tube about 1 mm. long, and about as 

 long as the subulate arched teeth, almost turbinate, nigrescent, acute 

 at base, equally inserted on the filiform pedicels which are 4-6 mm. 

 long and longer than the subulate and minute bracts. Peduncles 

 about 5 cm. long, arched. Upper leaves sessile, the lower conspicuous- 

 ly petioled, 5-8 cm. long, with filiform and tapering rachis. Leaflets 

 5-6 pairs, about ovsd, inclined to be shortly-cuneate below, 5-7 mm. 

 long, thin, all about the same size, the terminal one often obcordate, 

 minutely appressed-pubescent. Stems 2-3 ft. long, almost filiform, with 

 many internodes and the upper ones about as long as the leaves. Upper 

 stipules the largest, triangular, 4-6 mm. long. Stems many, from a 

 slender erect root which is much branched at the crown, as in A. 

 villosus. In gravelly places in moist canons of northern Colorado 

 from Canon City northward. Middle Temperate life zone. 



Astragalus sparsiflorus van. majusculus Gray Proc. Am. Acad. 6 

 206 (1864.) Pods oblong-oblanceolate, about 2 cm. long, somewhat 

 falcate, with the tip straight and not hooked and with suture convex 

 at tip. Flowers racemose and about 6. Leaflets 6-8 pairs, elliptical 

 to cuneate-oblong, fully 1 cm. long, long-petiolulate. Stems about a 

 foot long and much branched. At first sight this seems like a well 

 defined species, but it intergrades and often grows with the species. 

 Mountains of Colorado west of Denver and Boulder and in Platte 

 Canon. This is the normal well developed form. 



