Astragalus giganteus |
Astragalus filipes |
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basalt milk-vetch |
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Habit | Greenish perennial from a taproot and branched crown, the numerous, erect, slender stems 3-9 dm. tall. | |
Leaves | Leaves alternate, pinnate, 5-10 cm. long; leaflets 9-25, linear-oblanceolate, 7-20 mm. long and 1-2 mm. wide; stipules triangular, 1-3 mm. long, united below and free above. |
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Flowers | Inflorescence of laxly 10- to 30-flowered racemes on peduncles up to 2 dm. long, exceeding the leaves; pedicles slender, 2-6 mm. long; flowers pea-like, cream colored, 9-13 mm. long, spreading to pendant; calyx blackish, 4-6 mm. long, the 5 teeth under 1 mm. long; banner erect; wings rounded, shorter than the banner but 1-4 mm. longer than the slightly beaked keel; stamens 10. |
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Fruits | Pod spreading to pendulous, with a slender stipe 10-15 mm. long, the body membranous, greenish, usually glabrous, linear to oblong-elliptic in outline, 15-35 mm. long and 4-6 mm. wide, strongly compressed, elliptic in cross section, 1-celled. |
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Astragalus giganteus |
Astragalus filipes |
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Flowering time | May-June | |
Habitat | Sagebrush plains and lower foothills. | |
Distribution | Occurring east of the Cascades crest in Washington; British Columbia to northeast California, east to Nevada and Idaho.
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Origin | Native | |
Conservation status | Not of concern | |
Sibling taxa | ||
Web links |
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