Astragalus beckwithii |
Astragalus beckwithii var. weiserensis |
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Weiser's milkvetch |
Weiser's milkvetch |
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Habit | Plants perennial, caulescent, glabrous to sparsely strigose, hairs basifixed when present. | |
Stems | several, prostrate to ascending, 10–35(70) cm. |
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Leaves | 2–15 cm; leaflets (7)11–17, broadly ovoid to rhombic-elliptic; (6)10–25 × 5–13 mm; tips obtuse or sometimes mucronulate; surfaces glabrous to glabrate; stipules 3–10 mm; free. |
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Inflorescences | racemes loosely 7–16-flowered; peduncles 3–15 cm; bracts 3–7.5 mm; pedicels 1–2.5 mm; bracteoles usually 2. |
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Flowers | ascending at anthesis; calyces (8.5)10.2–13.5 mm, nearly glabrous, sometimes with a few black hairs on teeth; tubes (4.6)5.1–6.3 mm; teeth lanceolate, 4.5–7 mm; corollas 16–20.5 mm, ochroleucous; ovules (18)25–41. |
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Fruits | unilocular, ascending to declined, oblong- or ovoid-ellipsoid, sharply incurved or bent; ± obcompressed and dorsally flattened or sulcate below the triangular beak, ventrally carinate, 15–30 × 6–12 mm, mottled, glabrous; valves stiffly coriaceous to subligneous; gynophores 1.5–5 mm. |
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2n | =22. |
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Astragalus beckwithii |
Astragalus beckwithii var. weiserensis |
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Distribution | ||
Discussion | Sagebrush-bunchgrass communities, ash-clay outcrops, dry hillsides, road cuts. Flowering Apr–Jun. 500–1600 m. BR, BW, Lava, Owy. ID, NV, WA; north to British Columbia. Native. |
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Source | Flora of Oregon, volume 2, page 658 Richard Halse |
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Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Astragalus weiserensis | |
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