Tephrosia leiocarpa A. Gray

Cracca calva Rydberg, sp. nov
Tephrosia affinis S. Wats. Proc. Am. Acad. 22: 405. 1887. Not T. affinis S. Wats. 1886.
A perennial herb, 6—10 cm. high, woody at the base; stem and branches angled, slender, finely strigose; leaves 8-15 em. long; stipules setaceous, 8-10 mm. long; petiole 1-2 cm. long, as well as the rachis strigose; leaflets 9-17, oblong or oblong-oblanceolate, obtuse to retuse at the apex, mucronate, 2.5-3 cm. long, 8-10 mm. wide, glabrous above, silky-strigose beneath; racemes terminal and in the upper axils, long and slender, 1.5-2 dm. long; flowers 1 or 2 at each node; bracts subulate, deciduous; calyx silky-strigose, the tube 2.5-3 cm. long, the lobes subulate, 4 mm. long; corolla rose-colored, about 20 mm. long; banner broadly obovate, silky-strigose without; wings obliquely obovate, with a large basal auricle; pod about 5 cm. long, straight, 6 mm. wide, glabrous, 7-8-seeded.
Type collected on the slopes of the barranca of Guadalajara, Jalisco, June 11, 1902, Pringle 9773 (Herb. N. Y. Bot. Gard.). Distribution: Jalisco.

Cracca leiocarpa (A. Gray) Kuntze, Rev. Gen. 175. 1891
Tephrosia leiocarpa A. Gray, PI. Wright. 2: 36. 1853. Tephrosia afinis S. Wats. Proc. Am. Acad. 21 : 424. 1886. Tephrosia viridis M. E. Jones, Contr. W. Hot. 12: 7. 190b. Cracca affinis Rose, Contr. U. S. Nat. Herb. 12: 269. 1909.
A perennial herb, from a thick woody root; stems several, 3-5 dm. high, angled, striate, strigose; leaves 10-15 cm. long; stipules 4-6 mm. long, setaceous; petiole 1-3 cm. long; rachis sericeous-strigulose; leaflets 9-19, oblong, 2-4.5 cm. long, 5-7 mm. wide, obtuse or acutish, apiculate, glabrous above, cinereous-strigose beneath; racemes terminal and axillary in the upper axils, short-peduncled; bracts caducous; pedicels 5-8 mm. long; calyx cinereous-strigose, the tube 3 mm. long, the lobes lanceolate, 3 mm. long, acuminate; corolla rose-colored or purplish, 15-18 mm. long; banner strigulose on the back, suborbicular, longer than the other petals; wings oblong with an acute basal lobe, short-clawed; keel-petals semi-orbicular, shortclawed; pod glabrous, 3-5 cm. long, 6 mm. wide, straight, about 10-seeded; seeds sub-orbicular, brownish.
Typb locality: On the Sonoita, near Deserted Rancho, Sonora. Distribution: Southern Arizona to Sonora and southern Chihuahua.