Astragalus lentiginosus var. lentiginosus |
Astragalus lentiginosus var. vitreus |
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freckled milk-vetch, specklepod milk-vetch |
freckled milkvetch, glass freckled milkvetch |
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Habit | Plants perennial, 10–30(–50) cm, sparsely strigulose. | Plants perennial, 15–40 cm. |
Stems | glabrous or glabrate. |
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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. |
4.5–10 cm; leaflets (7–)13–19, blades obovate-cuneate or oblong-obovate, (5–)7–17(–21) mm, apex obtuse or truncate-emarginate. |
Racemes | 8–18(–22)-flowered; axis 0.5–3(–3.5) cm in fruit. |
loosely (10–)15–27-flowered, lax and open in fruit; axis 4–8.5 cm in fruit. |
Peduncles | 1–3.5 cm. |
4–9.5 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. |
13.2–17 mm; calyx 6.5–8 mm, tube 4.6–5.7 mm, lobes (1.5–)1.7–2.3 mm; corolla pink-purple or lavender with white wing 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. |
pale green and unmottled turning pallid, usually broadly ovoid, rarely lunately lanceoloid-acuminate, usually strongly inflated, rarely less so, 15–25 × (7–)9–15 mm, papery-membranous, subtranslucent, lustrous, glabrous; beak triangular, short, unilocular. |
Seeds | (15 or)16–21. |
21–31. |
2n | = 22. |
= 22. |
Astragalus lentiginosus var. lentiginosus |
Astragalus lentiginosus var. vitreus |
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Phenology | Flowering May–early Jul. | Flowering Apr–Jun. |
Habitat | Often on volcanic soils, on basalt, with sagebrush and bunchgrass, in ponderosa pine and western juniper communities. | Gullied badlands and desert flats, on sand or clay derived from sandstone or limestone, on volcanic gravel. |
Elevation | 200–1500 m. (700–4900 ft.) | 800–1500(–2000) m. (2600–4900(–6600) ft.) |
Distribution |
CA; ID; NV; OR; WA; BC |
AZ; UT |
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 vitreus is found in the valleys of the upper Virgin River and Kanab Creek, southward to the northern slope of the Kaibab Plateau, and Toroweap and House Rock valleys in eastern Washington and western Kane counties in Utah, and northern Mohave and northwestern Coconino counties in Arizona. (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 | Barneby: Leafl. W. Bot. 4: 119, plate 3, figs. 30–33. (1945) |
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