94 BOTANY. 
villous throughout with spreading hairs, very stout, a foot or two high : 
leaflets 10 to 15 pairs, cuneate-oblong to linear, 6 to 9 lines long, often 
retuse: flowers in long and long-peduncled racemes, ochroleucous, about 
nine lines Jong, on rather slender pedicels: pods coriaceous, linear and 
exsertly stipitate, an inch long, terete or somewhat compressed, with a deep 
narrow dorsal furrow, and 2-celled or nearly so, smooth, nearly straight, 
reflexed—From the Saskatchewan to Nebraska and Colorado; at Apex, 
Colo., Wolf (215). 
ASTRAGALUS RACEMOsUS, Pursh (FI. ii, 740).—Resembling the last, 
but glabrous or somewhat appressed-pubescent: pedicels slender: pod some- 
what broader and more compressed.—From Nebraska to Southern Colorado 
and Idaho; at Apex (216) and South Park, Colo., Wolf (227, 251). 
ASTRAGALUS HUMISTRATUS, Gray (Pl. Wright. ii, 43)—Perennial, some- 
what villous-pubescent with mostly appressed hairs: stems slender, pro- 
cumbent, a foot long or more: leaflets 5 to 10 pairs, linear-oblong, acute, 
half an inch long: flowers nearly sessile in a loose long-peduncled raceme, 
spreading, 4 lines long, purplish: calyx-teeth equalling or exceeding the 
campanulate tube: pods coriaceous, sessile, pubescent, linear-oblong, half 
an inch long, curved, somewhat compressed contrary to the sutures, nearly 
2-celled, with a deep dorsal furrow, the ventral suture prominent.—New 
Mexico to Sonora; in Western New Mexico, Loew (203). 
AsTRAGALUS GrRaciLis, Nutt. (Gen. ii, 100).—Perennial, somewhat 
appressed-pubescent, slender, erect or ascending, a foot high or more: leaf- 
lets 3 to 5 pairs, narrowly linear, half an inch long or less: flowers very 
small, white or purplish, in an elongated open long-peduncled spike: calyx- 
teeth very short: pods coriaceous, sessile, pubescent and rugose, 2 or 3 lines 
long, ovate-oblong and obcompressed, 1-celled, concave on the back, and 
the ventral suture prominent.—From Minnesota to Arkansas and the Rocky 
Mountains; at Kit Carson, Colo., Wolf (248). 
AsTRAGALUS ABoRIGINUM, Richardson. (Phaca aboriginum, Hook. F1.i, 
143, t. 66.)—From Colorado and Northern Nevada to the Arctic Zone; 
South Park, Wolf (249). 
ASTRAGALUS oROBoIDES, Hornem., var. AMERICANUS, Gray.—Allied to 
the last; more nearly glabrous : leaflets obtuse or retuse: flowers on longer 
