Astragalus lentiginosus var. semotus |
Astragalus lentiginosus var. trumbullensis |
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freckled milkvetch, White Mountains milk vetch |
freckled milkvetch, Mount Trumbull milkvetch |
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Habit | Plants perennial, 5–10(–20) cm, herbage subappressed-strigulose. | Plants perennial, 30–45(–65) cm, herbage green or subglabrescent. |
Leaves | 4–9 cm; leaflets (13–)17–27, distant, blades oblanceolate, oblong-oval, or oblong-elliptic, 2–9 mm, apex obtuse or emarginate. |
2–9.5(–10.5) cm; leaflets (7–)13–17, blades broadly obovate to oblanceolate or elliptic, 5–15 mm, apex retuse to round or subacute, adaxial surface usually strigose to strigulose, sometimes glabrate or glabrous. |
Racemes | 6–10-flowered, short and compact in fruit; axis 1–3 cm in fruit. |
loosely 4–15(–17)-flowered; axis elongating, 3–9.5 cm in fruit. |
Peduncles | 0.6–1.5 cm. |
4.5–7.5 cm. |
Flowers | 10.4–12 mm; calyx 5.2–7.3 mm, tube 3.6–5 mm, lobes 1.5–2.6 mm; corolla whitish. |
13–17 mm; calyx 6.3–7.4 mm, tube 4.8–5.5 mm, lobes 1.7–2 mm; corolla pink- or red-purple, sometimes with pale or white wing tips. |
Legumes | mottled, ovoid-acuminate, bladdery-inflated, 11–20(–23) × 6–12 mm, papery, sparsely strigulose; beak incurved, deltoid, 4–7 mm, unilocular. |
evidently persistent, stramineous or mottled, linear-oblong to oblong or narrowly ellipsoid, not or scarcely inflated, 17–32 × 4–5.5(–7.5) mm, ± bilocular, somewhat fleshy becoming leathery or stiffly papery, strigulose; beak 3–5 mm, unilocular; stipe 0.1–1 mm. |
Seeds | 13–15. |
14–28. |
2n | = 22. |
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Astragalus lentiginosus var. semotus |
Astragalus lentiginosus var. trumbullensis |
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Phenology | Flowering Jun–Aug. | Flowering Apr (Sep). |
Habitat | Among sagebrush, with bristlecone pine. | Sandstone outcrops and gravel, with Agave, Ephedra, Mortonia, Purshia, and other warm-desert shrubs. |
Elevation | 2100–3500 m. (6900–11500 ft.) | 900–1800 m. (3000–5900 ft.) |
Distribution |
CA; NV |
AZ |
Discussion | Variety semotus, similar to var. ineptus, occurs in the Inyo and White mountains in Inyo and Mono counties, California, and Esmeralda County, Nevada. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety trumbullensis is restricted to Mohave County. It is closely related to vars. mokiacensis and palans, weakly differentiated by a series of features that intergrade insensibly but taken in combination are more or less diagnostic (as is true for most members of the lentiginosus complex). J. A. Alexander (2005) provided statistical evidence that this variety is indistinguishable from var. mokiacensis (as Astragalus mokiacensis), and he considered the two synonymous. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Jepson: Fl. Calif. 2: 357. (1936) | S. L. Welsh & N. D. Atwood: Rhodora 103: 81, fig. 3. (2001) |
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