562 RYDBERG: Rocky MOUNTAIN FLORA 
glabrate above ; peduncles 0.5—1.5 dm. long; inflorescence race- 
mose, 5-10 cm. long; bracts lanceolate, acuminate, 3-5 mm. 
long ; pedicels very short; calyx-tube nearly cylindric, about 5 
mm. long, gibbous above, white-pubescent with short hairs; 
lower calyx-teeth subulate, about 1.5 mm. long; the upper 
lanceolate, shorter and slightiy broader; pod oblong, about 1.5 
em. long and 5 mm. thick, often sparingly hairy when young, in 
age glabrous, almost terete, leathery, completely 2-celled. 
This species has been confounded with A. Mortonii and some- 
times with A. canadensis. The former is found only in the Columbia 
Valley region and is characterized by the intermixed black hairs on 
the calyx, and by the more hairy pod which is distinctly sulcate 
on the lower suture. 4. orcophilus is really closer related to A. 
canadensis, but differs principally in the short bracts and calyx- 
teeth. In A. canadensis the bracts are linear-lanceolate, long-at- 
tenuate, the lower almost as long as the calyx, and the calyx- 
teeth longer, fully half as long as the tube. A. orcophilus grows 
in the foot hills at an altitude of 1,500-2,200 m. 
CoLorapo: Pagosa Springs, 1899, C. F. Baker 419 (type) ; 
near Boulder, 1902, F. Tweedy 5154; Stone Prairie, Larimer 
Co., 1897, G. E. Osterhout; Wahatoya Creek, 1900, Rydberg & 
Vreeland 5990; Durango, 1898, Baker, Earle & Tracy 478. 
“ Astragalus Shearii sp. nov 
Perennials with horizontal rootstock; stems slender, strigose 
and striate, about 2 dm. high; stipules triangular, strigose, free 
from the petioles, but slightly united across the back of the stem ; 
leaves 3-5 cm. long with 13-19 leaflets; these 5-8 mm. long, 
oblong, obtuse or retuse at the apex, glabrate above, grayish 
strigose beneath; peduncles 4—5 cm. long; raceme short, 5-10- 
flowered ; calyx-tube campanulate, about 4 mm. long, strigose, 
partly with black hairs; teeth triangular; corolla reddish-purple, 
nearly 1 cm. long ; pod oblong, 12-14 mm. long, glabrous, reticu- 
late, sessile, almost terete in cross-section; the lower suture 1- 
truded and forming a narrow partial partition. 
In general habit somewhat resembling A. Halli’ and A. flex 
uosus, but the structure of the pod places it nearest to A. elegans: 
CoLorapo: Twin Lakes, 1896, C..L. Shear 3317. 
¢ Homalobus Wolfii sp. nov. . 
Low depressed cespitose perennial ; stems intricately branched, 
less than 1 dm. long, covered by the scarious, strongly-veme® 
