Comprehensive Description
provided by North American Flora
Batidophaca sonorae (A. Gray) Rydberg
Astragalus Sonorae A. Gray. PI. Wright. 2: 44. 1853.
Tragacantha Sonorae Kuntze, Rev. Gen. 948. 1891.
Astragalus humistratus Sonorae M. E. Jones, Contr. W. Bot. 10: 58. 1902.
A perennial; stems slender, 3-5 dm. long, rather simple, terete, strigose-eanescent ; leaves 4—8 cm. long, ascending; stipules lanceolate to deltoid, 4-8 mmlong, membranous; petioles 5-15 mm. long; leaflets lance-linear, 0.5-2 cm. long, 1-2 mm. wide, silky-canescent, strigose on both sides, acute; peduncles 4-10 cm. long; racemes 3-6 cm. long; bracts lanceolate, 3-5 mm. long; calyx silky-canescent, the tube 3 mm. long, the teeth subulate, 3 mm. long; corolla purple, about 1 cm. long; banner striately veined, retuse, obovate, strongly arcuate; wings slightly shortei, the blade obliquely oblong, falcate; keel-petals lunate, stiongly arched at the middle attenuate with a blunt tip; pod about 1 cm. long, 4—5 mm. wide, arcuate, somewhat laterally compressed, acute on both sutures, finely strigose.
Type locality: Mountain Valleys between San Pedro and the Sonoita, Sonora.
Distribution: New Mexico, Arizona, and Sonora.
- bibliographic citation
- Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY
