provided by North American Flora
Homalobus decumbens Nutt.; T. & G. Fl. N. Am 1:351. 1838.
Astragalus decumbens A. Gray. Proc. Am. Acad. 6: 229. 1864. TragacatUha decumbens Kuntze. Rev. Gen. 944. 1891. Phaca decumbens Piper. Contr. U. S. Nat. Herb. 11: 373. 1906. Astragalus campestris decumbens M. E. Jones, Rev. Astrag. 74. 1923.
A perennial, with a rootstock, branched near the surface; stems 1-2 dm. long, decumbent, striate, sparingly strigose; upper stipules lanceolate, the lower triangular, connate, scarious, 2-4 mm. long; leaves 4-9 cm. long; leaflets 7-17, linear or narrowly lance-linear, 5-10 mm. long, mostly I mm. wide, often conduplicate, sparingly strigose; peduncles 6-S cm. long; racemes short, 5-10-flowered; bracts subulate, 2 mm. long; calyx strigose, the tube 2 mm. long, the teeth subulate, less than 1 mm. long; corolla white or cream-colored, with a purpletipped keel; banner broadly obovate, nearly 1 cm. long, strongly arched below the middle; wings S mm. long, the blade oblong, falcate; keel-petals shorter, the blade lunate; pod linear, arcuate, 2.5 cm. long, 3 mm. wide, strigose, acute at each end.
Type locality: Sandy plains of the Colorado of the West, near the sources of the Platte [Green River Basin, Wyoming).
Distribution: Wyoming and Colorado.
- bibliographic citation
- Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY