CATALOGUE. 95 



pedicels, in a loose elongated raceme, purple : calyx-teeth shorter than the 

 tube : pod very shortly stipitate, pubescent, reflexed, half an inch long or 

 less, oblong-ovate, nearly terete or slightly compressed. — From Colorado to 

 Wyoming and the Saskatchewan ; South Park, Wolf (233). 



Astragalus alpinus, Linn. — From Maine to Washington Territory 

 and northward, and south in the Rocky Mountains to Colorado ; South 

 Park, Wolf (211, 229, 244, 245, 246). 



Astragalus lotiplokus, Hook. (Fl. i, 152). — Perennial, hoary with 

 appressed silky hairs, very low and diffuse : leaflets 2 to 5 pairs, oblong to 

 linear, a half to an inch long : flowers few, yellow, small, nearly sessile in a 

 long-pedunculate or sessile spike : calyx-teeth at least as long as the tube, 

 and often nearly equalling the petals : pods coriaceous, about an inch long, 

 sessile, straight, pubescent, acuminate- oblong, obcompressed, 1-celled, 

 with a more or less deep dorsal furrow, and the ventral suture somewhat 

 prominent. — From Texas to Nebraska and northward ; at Denver, Wolf 

 (239). 



Astragalus Missouriensis, Nutt. (Gen. ii, 99). — Perennial, canescent 

 with closely appressed dense silky straight pubescence, low and shortly 

 caulescent or nearly stemless : leaflets 4 to 9 pairs, oblong to rarely obo- 

 vate, 2 to 4 lines long, acute or obtuse : spikes short, on peduncles equalling 

 the leaves : flowers purple, rather large : calyx-teeth much shorter than the 

 cylindrical appressed-silky tube: pods 8 to 12 lines long, thick-coriaceous, 

 oblong and somewhat obcompressed, nearly straight, obtuse at base, pubes- 

 cent and rugose, 1-celled, with the ventral suture prominent, and often more 

 or less concave on the back. — A rather common species, from the Saskatch- 

 ewan and Wyoming Territory to New Mexico ; at Kit Carson, Colo., Wolf 

 (240), and at Deer Spring, Ariz. (186). 



Astragalus Shortianus, Nutt. (Torr. & Cray, Fl. i, 331). (A. cy emeus, 

 Cray, PL Fendl 34.) — Like the preceding, but the leaves broader and 

 usually obovate ; the pubescence upon the calyx of coarse, somewhat 

 entangled hairs, not appressed; the pod as in the last, but larger, longer 

 (sometimes two inches long), and more curved. — Colorado to Wyoming 

 and New Mexico; Clear Creek, Colo., Wolf (241), and N. Mexico, Rothrock 

 (1112). 



