28 
Perennial from a stout root, cinereous or rusty villous-pubes- 
cent throughout. Stems 3-6 dm. or more high, erect, branching, 
angled and striate; leaves elliptical in outline, 1 dm. or more 
long; stipules setaceous, caducous; petioles 1-2 cm. long, leaflets 
19-25, 2-3 cm. long, oblong, obtuse, often retuse, apiculate, 
the terminal one often obovate, minutely pubescent above, silky, 
cinereous-pubescent or villous beneath; raceme oblong, sessile 
or short peduncled; pedicels 5-8 mm. long; bracts 5-8 mm. long, 
villous; flowers 1.5 cm. long; calyx villous, tawny or rusty, the 
teeth acuminate, shorter, or as long as the tube, corolla cream- 
colored(?), vexillum pubescent on the outer surface; legume 3-4 
cm. long, straight or somewhat falcate, spreading, rusty-villous or 
tomentose; seeds 6-9, oblong-ovoid, pale greenish, smooth. 
Very close to C. Virginiona, from which it differs in the branch- 
ing stems, more numerous leaflets, and the tawny pubescence of 
the inflorescence and legumes. 
Arizona, New Mexico, Mexico. 
Original locality: Near Guanajuato, South Mexico. 
3. CRACCA LEIOCARPA (A, Gray) Kuntze. 
Tephrosia lewcarpa A. Gray, Pl. Wright. 2: 36 (185 3). 
Cracca letocarpa Kuntze, Rev. Gen. Pl. 175 (1891). 
Perennial from a thick, lignescent root, appressed cinereous- 
pubescent. Stems 3 dm. or more high, many from the same root, 
sub-simple, angled and striate; stipules 4-6 mm. long, setaceous, 
persisting ; petioles t-3cm. long; leaves linear-oblong in outline ; 
leaflets 17-12 or more, linear-oblong, 2-4.5 cm. long, 5-7 
mm. wide, obtuse or acutish, apiculate, glabrous above, sericeous 
and cinereous beneath; racemes terminal and axillary, short- 
peduncled, exceeding the leaves; bracts caducous; pedicels 5-8 
mm. long; flowers 2 cm. or less long; calyx cinereous, the subulate 
teeth as long as the tube; corolla purplish; vexillum minutely 
pubescent ; legume 3-5 cm. long, 6 mm. wide, straight, yellowish, 
glabrous; seeds about 10, sub-orbicular or ovoid, brownish. 
Mature seeds not seen. 
New Mexico, Arizona, Mexico. 
Original locality: New Mexico, Wright (No. 965) and North 
Mexico. 
Authentic specimen in Herb. Columbia College. 
4. Cracca LINDHEIMERI (A. Gray) Kuntze. 
Tephrosia Lindheimeri A. Gray, Bost. Journ. Nat. Hist. 6: 172 
(1850). , ; 
