Comprehensive Description
provided by North American Flora
Cracca potosina (Brand.) Rydberg
Tephrosia potosina Brand. Univ. Calif. Publ. Bot. 4: 272. 1912.
A perennial herb, with a woody root; stem decumbent, flexuous, densely hirsute-pilose; leaves 1-1.5 dm. long; stipules linear-lanceolate, hirsute, S mm. long; petiole 4-6 cm. long; rachis hirsute-pilose; leaflets 3-7, broadly obovate to orbicular, rounded or retuse at the ap^x, 2 5 3 5 nn long, 2-3 cm. wide, glabrous above, hirsute-pilose beneath; racemes subopposite the leaves, 1.5-2 dm. long, about 12-flowered; flowers mostly 2 at each node; calyx densely hirsute, the tube 2 mm. long, the lobes lance-subulate, 3 mm. long; corolla purplish, about 12 mm. long; banner obovate, silky-strigose without; pod about 5 cm long, Ji mm wide, acute at each end, densely hirsute-pilose, about 6-seeded.
Typb locality: Near Rascon, San Luis Potosi. Distribution: San I.uis Potosi and Nuevo Le6n.
- bibliographic citation
- Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY
