Astragalus succumbens |
Astragalus giganteus |
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Columbia milkvetch, crouching milkvetch |
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Habit | Plants perennial, caulescent, densely to thinly grayish hirsute, hairs basifixed. | |
Stems | several, decumbent to erect, 2–40(50) cm. |
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Leaves | 3–10(11) cm; leaflets (7)9–19, oblong to oblong-ovate, obovate to elliptic, 5–19 × 3–9 mm; tips acute to obtuse or retuse; surfaces abaxially hirsute, adaxially hirsute to glabrescent; stipules (1.5)2.5–8(9) mm; free. |
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Inflorescences | racemes densely 10–25-flowered; peduncles 1.5–5.5 cm; bracts (2.5)4–12 mm; pedicels 0.5–2.3 mm; bracteoles 0–2. |
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Flowers | spreading-ascending at anthesis; calyces 9.5–13(15) mm; hirsute to hirsutulous with all white or white with some black hairs; tubes 7–8.6 mm; teeth subulate to linear-lanceolate, 2.5–5.5 mm; corollas 14–20(23) mm, bicolored; banners pink to white; wings white; keels pink to purple; tips spotted; ovules 27–38. |
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Fruits | bilocular, ascending, lunately linear-lanceolate or -oblong, arcuate to straight, triquetrous, strongly compressed, deeply sulcate dorsally; (20)25–40 × 4–8 mm, glabrous; valves cartilaginous; stipes 0. |
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2n | =24. |
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Astragalus succumbens |
Astragalus giganteus |
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Distribution | ||
Discussion | Sandy hills and dunes, roadbanks, sagebrush. Flowering Apr–Jul. 50–900 m. Col. WA. Native. |
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Source | Flora of Oregon, volume 2, page 674 Richard Halse |
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Sibling taxa | ||
Web links |