Comprehensive Description
provided by North American Flora
Astragalus bigelovii A. Gray, PI. Wright. 2: 42. 1853
Tragacantha Bigelovii Kuntze, Rev. Gen. 943. 1891.
Astragalus Bigelovii MacDougalii Gand. Bull. Soc. Bot. Fr. 48: xiv. 1902.
A cespitose subacaulescent perennial, with a short caudex; stems several, very short, rarely 1 dm. long, densely silky-villous; leaves 1-2 dm. long, the rachis and petioles shaggyhairy; stipules herbaceous, lanceolate to deltoid, 8-10 mm. long; leaflets 21-31, broadly oval, 1-2 cm. long, densely silky-villous with long yellowish hairs; peduncles erect or decumbent, 1-3 dm. long; racemes dense, 5-15 cm. long; bracts 4-10 mm. long, lance-subulate; calyx loosely silky-villous, the tube 7-8 mm. long; corolla purple, about 2 cm. long; banner obovate, gradually arcuate; wings shorter, the blade oblong, arcuate, with a large basal auricle; keel-petals similar but broader and more falcate; pods obliquely ovoid, arcuate, 12-15 mm. long, 7—8 mm. thick, and 5 mm. wide, densely villous, slightly sulcate on both sutures.
Type locality: Organ Mountains, New Mexico.
Distribution: Texas to Arizona and Durango.
- bibliographic citation
- Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY
