Comprehensive Description
(
anglais
)
fourni par North American Flora
Xylophacos cymboides (M. E. Jones) Rydb. Bull. Torrey Club 40:49. 1913.
Astragalus cymboides M. E. Jones, Proc. Calif. Acad. II. 5: 650. 1895. Astragalus amphyoxys cymbellus M. E. Jones, Rev. Astrag. 115. 1923.
A perennial, with a cespitose matted caudex; stems very short, covered by leaf -bases and stipules; leaves 3-8 cm. long, ascending; stipules triangular-ovate, 5-S mm. long, pubescent; leaflets 7-11, oval or obovate, 5-10 mm. long, 4—6 mm. wide, acutish, strigose-canescent; peduncles decumbent, rarely exceeding the leaves; racemes 5-10-flowered; bracts ovate or lanceolate, 3-5 mm. long; calyx strigose-canescent, the tube 7 mm. long, oblique at the base, the teeth subulate, about 1 mm. long; corolla about 1.5 mm. long, usually dirty-white, with purplish tips; banner obovate, deeply notched; blades of the wings oblong, slightly arcuate;
20 keel-petals sharply arched, shorter than the wings; pod straight, acute at each end, 2-2.5 cm. long, S mm. wide, with prominent sutures, strigulose, cross-reticulate and pitted; the exocarp in age separating from the endocarp.
Type locality: Cottrcll's Ranch. Henry Mountains. Utah.
Distribution: Eastern Utah.
- citation bibliographique
- Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY