Astragalus lentiginosus var. micans |
Astragalus lentiginosus var. lentiginosus |
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freckled milkvetch, shining freckled milkvetch, shining milk vetch |
freckled milk-vetch, specklepod milk-vetch |
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Habit | Plants perennial, clump-forming, 20–40 cm, herbage silvery- or white-silky, hairs 1.1–2 mm. | Plants perennial, 10–30(–50) cm, sparsely strigulose. |
Leaves | 4.5–9.5 cm; leaflets 11–17, blades usually narrowly to broadly obovate or ovate, rarely rhombic-suborbiculate, 5–14 mm, apex truncate-emarginate to subacute. |
3–10 cm; leaflets (5–)9–17(or 19), blades broadly obovate, obovate-cuneate, or oblong-elliptic to suborbiculate or oblanceolate, (3–)5–15 mm, apex retuse or obtuse. |
Racemes | loosely (12–)20–35-flowered, lax and open in fruit; axis (3.5–)4.5–10(–15) cm in fruit. |
8–18(–22)-flowered; axis 0.5–3(–3.5) cm in fruit. |
Peduncles | 4.5–9 cm. |
1–3.5 cm. |
Flowers | 12.2–14.3 mm; calyx 6–7.6 mm, tube 4.5–4.9 mm, lobes 1.4–2.6 mm; corolla pink-lavender. |
7.4–11 mm; calyx 4.1–6.4 mm, tube 2.8–4.2 mm, lobes 1–2.2 mm; corolla whitish or yellowish, sometimes faintly lilac. |
Legumes | green, unmottled, obliquely ovoid, inflated, 15–20 × 8–10 mm, bilocular, stiffly papery, densely silky-villous-tomentulose; beak 2.5–4 mm, unilocular. |
green, usually mottled, becoming stramineous or brownish, obliquely ovoid-acuminate to lanceoloid-acuminate, strongly to scarcely inflated, 10–23 × (3–)4.5–10 mm, semibilocular, stiffly papery, opaque or nearly so, usually thinly strigulose, rarely puberulent; beak 4–9 mm, unilocular. |
Seeds | 23–28. |
(15 or)16–21. |
2n | = 22. |
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Astragalus lentiginosus var. micans |
Astragalus lentiginosus var. lentiginosus |
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Phenology | Flowering Apr–Jun. | Flowering May–early Jul. |
Habitat | Forming large clumps over low slopes of mobile dunes. | Often on volcanic soils, on basalt, with sagebrush and bunchgrass, in ponderosa pine and western juniper communities. |
Elevation | 900–1000 m. (3000–3300 ft.) | 200–1500 m. (700–4900 ft.) |
Distribution |
CA; NV |
CA; ID; NV; OR; WA; BC |
Discussion | Variety micans is a local adjunct of the variable var. variabilis (D. Isely 1998), restricted to the southern end of Eureka Valley in Inyo County, California, and adjacent to Big Dune and in the Amargosa Desert, near Lathrop Wells in Nye County, Nevada. Isely questioned its recognition at varietal rank, initially considering it a local dune-specialized ecotype. Although it is ordinarily a strong perennial, some plants are evidently short-lived, a feature shared with var. coulteri. Variety micans is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety lentiginosus is widespread in the northern part of its range and is partially sympatric with vars. platyphyllidius and salinus in the southern part of its range. It is transitional to both. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. lentiginosus var. carinatus | |
Name authority | Barneby: Leafl. W. Bot. 8: 22. (1956) | unknown |
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