Astragalus robbinsii var. alpiniformis

(Rydberg) Barneby in C. L. Hitchcock et al.

Vasc. Pl. Pacif. N.W. 3: 258. 1961.

Common names: Wallowa elegant milkvetch
Endemic
Basionym: Atelophragma alpiniforme Rydberg Bull. Torrey Bot. Club 55: 129. 1928
Treatment appears in FNA Volume 11.

Stems usually ascending, (10–)15–45 cm. Leaves 4–9.5 cm; leaflets 9–17, blades (3–)5–12 mm, surfaces strigulose abax­ially, hairs subappressed, to 0.2–0.5 mm. Peduncles (6–)8–21 cm. Racemes remotely (3–)6–12-flowered; axis (2–)6–15 cm in fruit. Flowers 7.5 mm; corolla lilac. Legumes flattened or obscurely depressed abaxially, 8–13 × 3.7–5 mm, cusp 0.7–2.2 mm, strigulose, hairs usually black, rarely all white; stipe 1.2–2 mm. Seeds 3–6.


Phenology: Flowering Jun–Aug.
Habitat: Brushy stream banks, gravel bars, on granite.
Elevation: 1200–3500 m.

Discussion

Selected References

None.

Lower Taxa

None.
Stanley L. Welsh +
(Rydberg) Barneby in C. L. Hitchcock et al. +
Atelophragma alpiniforme +
Wallowa elegant milkvetch +
1200–3500 m. +
Brushy stream banks, gravel bars, on granite. +
Flowering Jun–Aug. +
Vasc. Pl. Pacif. N.W. +
Papilionoideae de +
Astragalus robbinsii var. alpiniformis +
Astragalus robbinsii +
variety +