68 
BOTANY. 
Var. MoRTONi. (A. Mortoni,'^utt Grays Rev., I. c, 196.) Differing from 
the last only in the somewhat pubescent ovary and legume ; compared, how- 
ever, with Wisconsin specimens of Canadensis, the legumes are of somewhat 
less diameter, more decidedly sulcate dorsally, and less crowded in the 
matured spike. Collected by Nuttall on the head-waters ot the Missouri and 
Platte, and by Brewer in California. In the Truckee Valley and the 
Toyabe and East Humboldt Mountains, Nevada, and Bear River Valley, 
Utah; 5-8,000 feet altitude; July, August. (261.) 
Astragalus adsuegens, Pall. Gray's Rev., I. c, 197. Perennial, 
cinereous with minute appressed pubescence or glabrate ; stems rather 
stout, 4-18' high, ascending or decumbent; stipules scarious, mostly united 
at base ; leaflets 10 pairs, 6-9" long, narrowly or linear-oblong ; spike dense, 
at length oblong or cylindrical ; flowers purplish, medium sized, ascending ; 
calyx-tube rather long-campanulate, twi«e exceeding the setaceous teeth, 
subvillous with light or dark hairs; pod coriaceous, pubescent, sessile, 
ascending, ovate-oblong (4-5" in length,) straight, usually triangular- 
compressed, with a dorsal sulcus, and 2-celled by the intruded dorsal suture, 
many-ovuled. — From Nebraska to Oregon and the Saskatchewan. Flowering 
specimens, probably of this species, were collected by Stretch in Pleasant 
Valley, Nevada. 
Astragalus hypoglottis, L. Gray's Rev., I. c, 197. Perennial, with 
a rather loose pubescence or nearly glabrous ; stems 6'-2° long, slender, 
diffusely procumbent or ascending ; stipules subfoliaceous and more or less 
sheathing; leaflets 7-10 pairs, oblong, obtuse or retuse; heads rather many 
flowered ; corolla violet i' long; legume as in the last, but ovate and triangular, 
silky-villous, very shortly stipitate, and but 6-8-seeded. — From Southern 
Colorado (Moro River, Fendler,) northward along the Rocky Mountains and 
Red River Valley to the Arctic Circle and Alaska. In the East Humboldt 
Mountains, Nevada, and in the Wahsatch and Uintas ; 6-8,000 feet altitude ; 
June-September. (262.) 
Astragalus Nuttallianus, DC. Gray's Rev., I. c., 199. Annual, 
stems ascending or erect, 3-18' high, minutely pubescent ; leaflets 5-7 pairs, 
elliptical or oblong, obtuse or retuse ; flowers few, subcapitate or sometimes 
solitary, on slender peduncles, hght purple, small (2" long,) the keel much 
shorter than the banner, with the apex incurved ; legume coriaceous, linear, 
subcompressed, incurved near the base, sulcate dorsally, 2-celled, many- 
