111 
Indian Terr—Near Atoka, C. S. Sheldon, No. 60 (1891). 
Zevas—Drummond, No. 122 (1835); Wilground, Hempstead, 
Elihu Hall (1892); Rio de la Trinida y Bejax (1828) lab. 
melilitoides. 
24. PSORALEA RHOMBIFOLIA Torr. and Gray. 
Psoralea rhombifolia Torr. and Gray, Fl. N. Am. 1: 303 (1838). 
Type in Herb. Columbia College. 
Decumbent or trailing (rarely erect) from a somewhat thick- 
ened root, angled below, sparingly pubescent above; leaves 
3-foliolate, on petioles 2-4 cm. or more long, upper ones nearly 
sessile; stipules 3-5 mm. long, ovate or lanceolate; leaflets 8 mm. 
to 3 cm. long, ovate-rhomboid (when very small, nearly orbicu- 
lar), the terminal one acutish, the lateral ones obtuse; flowers 
dark blue or reddish, in small capitate racemes, on peduncles 3-8 
cm. long; bracts about 3 mm. long, elliptical, ciliate; calyx 8 mm. 
long, somewhat gibbous above, the lobes nearly equal, triangular ) 
acute, spreading; pod mostly 1 cm. long, hirsute, with a long 
straight beak; seed elliptical, nearly 5 mm. long, brownish, rough- 
ened with minute darker glands or tubercles. 
Texas—Lindheimer, No. 35 (1843), also 291 (1849-50); Dallas, - 
Reverchon, No. 213 and 563* (1881); Corpus Christi Bay, 
Palmer, No. 223 (1880); Drummond, No. 134 (type); Ch. 
Wright; Hockley, F. W. Thuron (1891). : 
Mexico—Sierra Madre, forty miles east of Saltillo, Palmer, No. 
254 (1880); Monterey, Palmer, No. 222. 
25. PsoraALEA AMERICANA L. 
Psoralea Americana L. Sp. Pl. 763 (1753). 
Psoralea dentata D.C. Prodr. 2: 221 (1825). Se ee 
Psoralea corylifolia Britton, Bull. Torr. Bot. Club, 17: 313 
(1890), not of Linn. aoe ia 
_ Somewhat shrubby at the base, erect, over 3 dm. high, branch- 
ng, glabrous, glandular throughout; stipules lanceolate,acuminate; 
Caves 3-foliolate ; petioles 4-6 cm. long ; leaflets 2-344 cm. long, nee 
€ terminal one sub-orbicular, the lateral ones obliquely hen: ie 
use, irregularly crenate-dentate; racemes spicate, elonga aoe. 
ne Cent, much exceeding the leaves, or when young on eS ee: 
rong capitate ; bracts lanceolate, shorter than the calyx; calyx- 
— pubescent, the lower one broader and longet than Ne 
tae Per ones; pod glabrous, barely longer than the cal 
' Seed 3 mm. long, densely covered with minute glam 
