Astragalus lentiginosus var. lentiginosus |
Astragalus lentiginosus var. floribundus |
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freckled milk-vetch, specklepod milk-vetch |
Carson city milkvetch, floriferous freckled milkvetch, floriferous milk vetch, freckled milkvetch |
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Habit | Plants perennial, 10–30(–50) cm, sparsely strigulose. | Plants perennial, 20–50 cm. |
Stems | prostrate to weakly ascending, branched proximally. |
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Leaves | 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. |
3–8(–11) cm; leaflets 11–15(–19), blades obovate or oblanceolate, 5–15 mm, apex retuse, surfaces glabrate to densely strigulose, hairs appressed or subappressed. |
Racemes | 8–18(–22)-flowered; axis 0.5–3(–3.5) cm in fruit. |
(11–)15–30(–37)-flowered, short and dense, cylindric or globose in fruit; axis 1–4(–7) cm in fruit. |
Peduncles | 1–3.5 cm. |
1–4(–7) cm. |
Flowers | 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. |
8.8–11 mm; calyx 4–6.5 mm, tube 3–4 mm, lobes 0.6–1.4(–2) mm; corolla whitish, sometimes wings and keel with lavender tips. |
Legumes | 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. |
faintly mottled becoming stramineous, obliquely ovoid or subglobose, strongly inflated, (8–)12–21 × (6–)7–12 mm, thinly papery, translucent, glabrous or strigulose; beak 3–7 mm, unilocular. |
Seeds | (15 or)16–21. |
15–21(–25). |
2n | = 22. |
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Astragalus lentiginosus var. lentiginosus |
Astragalus lentiginosus var. floribundus |
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Phenology | Flowering May–early Jul. | Flowering May–Jun. |
Habitat | Often on volcanic soils, on basalt, with sagebrush and bunchgrass, in ponderosa pine and western juniper communities. | Sagebrush communities, on sandy, granitic, or basaltic substrates. |
Elevation | 200–1500 m. (700–4900 ft.) | 1100–1600(–2100) m. (3600–5200(–6900) ft.) |
Distribution |
CA; ID; NV; OR; WA; BC |
CA; NV; OR |
Discussion | 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.) |
Variety floribundus is the only member of Astragalus lentiginosus in the Lake Tahoe area; it occurs along the eastern flanks of the Sierra Nevada, passing into var. ineptus in Mono County, and extends northward into southeastern Oregon, where it grades into var. salinus. (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 | unknown | A. Gray: Proc. Amer. Acad. Arts 6: 524. (1865) |
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