Comprehensive Description
provided by North American Flora
Hamosa hartwegii (Benth.) Rydb. Bull. Torrey Club 54:333. 1927.
Astragalus Harlwegii Benth. PI. Hartw. 10. 1839. Tragacanlha Harlwegii Kuntze, Rev. Gen. 945. 1891.
A perennial; stem 3-6 dm. high, sparingly strigose, striate, flexuose; leaves spreading, 6-8 cm. long, acuminate; leaflets 15-21, oblong or oblanceolate to nearly linear, 6-15 mm. long, acute at the base, obtuse at the apex, glabrate above, strigose beneath ; peduncles 5-10 cm. long; racemes 4—8 cm. long, rather dense; bracts lanceolate, 2 mm. long; flowers nearly sessile, reflexed; calyx white-strigose, the tube 2 mm. long, the teeth deltoid, less than 1 mm. long; corolla white or ochroleucous, 5-7 mm. long; banner broadly obovate, strongly arched at the middle; wings as long, the blade broadly obovate; keel-petals shorter, the blade semiorbicular; pod obliquely lance-oblong, slightly arcuate, 12-15 mm. long, 3 mm. wide and as thick, white-strigulose, the cross-section inversely V-shaped.
Type locality: Aguascalientes. Distribution: Coahuila to Sonora and Mexico.
- bibliographic citation
- Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY
