108 
peduncles somewhat shorter than the petioles, 2-3 cm. long; 
flowers on slender lax pedicels, in dense, capitate or elongated 
spikes; bracts ovate, long-acuminate, scarious, but little shorter 
than the calyx; calyx conspicuously villous with spreading hairs, 
somewhat gibbous above, the lobes lanceolate, 8-10 mm. long, 
the lower lobe the broadest; pod scarious, 1 cm. long, somewhat 
villous, with a straight slender beak; seed about 5 mm. long, 
ovoid, greenish or black, smooth and shining. 
California—McGinnis Ranch, head of Salinas River, Palmer 
(1876) type; San Rafael Mts., Santa Barbara Co., H. C. Ford 
(1887); Head waters of Eel River, Lake Co., Volney Rattan, — 
No. 12 (1884); base of mountains, Mojave region, S. B. & W. 
F. Parish, No. 1284; Lake Co., M. K. Curran (1884); Mt 
Diablo, Geo. W. Davidson (1892); Mt. Diablo, Greene (1892). 
Lower California—Japa, Orcutt (1884). 
Arizona—Peach Springs, Lemmon, No. 4146 (1884); Buckskin 
Mts., Jones (1891); Navajo Springs, Jones (1890). 
Utah—Beaver City, Palmer, No. 97 (1877); Mrs. Thompson (>- 
~ Utah, 1872); Garfield Co., A. L. Siler (1883). 
Colorado—_Westwater, alt. 4,500 ft.; Jones (1891). 
21. PSORALEA CASTOREA S. Wats. : 
Psoralea castorea S. Wats. Proc. Am. Acad. 14: 291 (1879) 
Type in Herb. Gray. ee 
Root ligneous, about 8 cm. long; stem erect, 10-15 cm. high 
with a few scarious scales, the whole plant covered with closely : 
appressed rigid white hairs; stipules ovate-lanceolate, scarlous, & 
persistent; petioles 8-10 cm. or more long; leaves 3-5 foliolate; — 
leaflets 3-5 cm. long. 2-5 cm. wide, cuneate-obovate, rounded, retuse 
or acutish; peduncles shorter than the petioles; flowers 1n dense, 
capitate spikes about 3 cm. long; bracts ovate or lanceolate 
acute, less than 5 mm. long; calyx slightly gibbous above, the: 
four upper lobes lanceolate, attenuate, nearly as long as the cuneate 
or spatulate lower one, which is over 1 cm. long; pod 8 mm 
long, the attenuate beak 14-15 mm. longer; seed about 7 mm 
long, flattened, transversely wrinkled, light brown. oe 
_ In the original description the large lower calyx-lobes bec 
been mistaken for bracts. It differs mainly from P. Californie ae 
its closer, whiter pubescence, the size of the bracts, which in the 
specimens seen were not scarious, the shape of the calyx-lobes 
the pod, which again is not scarious and has a much longer 
more slender beak, and the wrinkled seed 3 . 
