Astragalus robbinsii var. morganiae
N. Amer. Sp. Astragalus, 56, fig. 7h. 2007.
Stems ascending, 7–10 cm. Leaves 2.5–3.8 cm; leaflets 9 or 11, blades 8–11 mm, surfaces strigulose abaxially, hairs subappressed to ascending, to 0.6 mm. Peduncles 3.5–6 cm. Racemes barely elongating, 5–11-flowered; axis 1–1.5 cm in fruit. Flowers 7–9 mm; corolla pink-purple. Legumes 10–11 × 5–6 mm, densely villosulous, hairs black; septum 0.2–0.7 mm wide; stipe 5 mm. Seeds 5 or 6.
Phenology: Flowering May–Aug.
Habitat: Alpine tundra.
Elevation: 1000–1100 m.
Distribution
Alaska.
Discussion
The rationale for recognizing var. morganiae, which is found on Mt. Roberts near Gastineau Peak, Juneau, is to call attention to it, an entity at first considered a remote outlier of the distant var. minor that is more closely related to, but still distant from, var. harringtonii.Flowering measurements are based on scant material and are tentative.
Selected References
None.