Astragalus lentiginosus var. salinus |
Astragalus lentiginosus var. latus |
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harney milkvetch, sagebrush milk vetch, salty freckled milkvetch, salty loco milkvetch |
freckled milkvetch, schell creek milkvetch |
|
Habit | Plants perennial, 6–30(–45) cm. | Plants perennial, 5–17 cm. |
Stems | ascending to erect, mostly unbranched. |
usually ascending, rarely prostrate. |
Leaves | 4–10 cm; leaflets (9 or)11–19, blades broadly obovate, obovate-cuneate, obcordate, or oblong to oblanceolate, 5–20 mm, apex usually retuse or emarginate, surfaces glabrate to densely strigulose, hairs appressed or subappressed. |
(4–)6–13 cm; leaflets 11–17(–23), blades broadly obovate, ovate, or broadly oblanceolate, (4–)6–15 mm, apex shallowly notched or obtuse. |
Racemes | 10–25-flowered, floriferous from middle to distalmost nodes, short and compact in fruit; axis 1.5–4(–9) cm in fruit. |
shortly and loosely 5–12(–18)-flowered, short and compact in fruit; axis 0.7–2(–4) cm in fruit. |
Peduncles | 2–4.5(–5) cm. |
1.5–6 cm. |
Flowers | 9.5–11.5 mm; calyx 5–6.4 mm, tube 3.6–4.2(–4.6) mm, lobes 1.2–2.2 mm; corolla whitish, sometimes wings and keel with lavender tips. |
(11.3–)15–19 mm; calyx (6.5–)7–12.5 mm, tube (4.5–)5.6–8.2 mm, lobes (1.4–)2–4 mm; corolla pink-purple. |
Legumes | green or mottled becoming stramineous, obliquely ovoid or subglobose, strongly inflated, 14–26(–30) × (6–)7.5–14 mm, papery-membranous, translucent, glabrous or puberulent; beak 3–9 mm, unilocular. |
green, red-mottled, becoming stramineous, plumply ovoid or subglobose, strongly inflated, 1–2.5 × 0.7–1.6 cm, leathery, glabrous; beak 2.5–5 mm, bilocular. |
Seeds | (7–)16–25. |
(12–)22–28. |
2n | = 22. |
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Astragalus lentiginosus var. salinus |
Astragalus lentiginosus var. latus |
|
Phenology | Flowering Apr–Jun. | Flowering May–Jul. |
Habitat | Saline flats and playas upward to mountain slopes in sagebrush, oak, and other montane communities. | Open, gravelly slopes in timber belt. |
Elevation | 700–2600 m. (2300–8500 ft.) | (1700–)2200–3000 m. ((5600–)7200–9800 ft.) |
Distribution |
CA; ID; MT; NV; OR; UT; WY; BC |
NV |
Discussion | Variety salinus, widespread in the northern and eastern portions of the Great Basin, occupies a crucial position in the Astragalus lentiginosus complex, serving to link many superficially disparate lines of differentiation (R. C. Barneby 1964). On the one hand, one can trace a sequence passing through var. floribundus to var. ineptus, and then to vars. antonius, idriensis, and sierrae. On the other hand, another strand leads through vars. lentiginosus and platyphyllidius to vars. chartaceus, diphysus, and finally australis. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety latus is known from the Schell Creek and Egan ranges in White Pine County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. salinus | A. diphysus var. latus |
Name authority | (Howell) Barneby: Leafl. W. Bot. 4: 86. (1945) | (M. E. Jones) M. E. Jones: Rev. N.-Amer. Astragalus, 125. (1923) |
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