Astragalus lentiginosus var. piscinensis |
Astragalus lentiginosus var. negundo |
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Fish Slough milk vetch |
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Habit | Plants perennial, to 100 cm. | Plants perennial, 19–32 cm. |
Stems | prostrate. |
diffuse and incurved-ascending, often red- or purple-tinged. |
Leaves | 2–5 cm; leaflets 3 or 5, blades linear-oblanceolate, 7–15 mm, terminal leaflet 14–30 mm, apex obtuse or subacute. |
(2.5–)4–11 cm; leaflets (7–)13–19, blades elliptic-oblanceolate, broadly oblong-oblanceolate, or obovate, (2–)5–17 mm, apex obtuse or emarginate. |
Racemes | shortly 5–12-flowered, short and compact in fruit; axis 1.5–4 cm in fruit. |
5–11-flowered, flowering from middle and distally, short and compact in fruit; axis 0.5–5 cm in fruit. |
Peduncles | 2–5.5 cm. |
2.2–5 cm. |
Flowers | 13 mm; calyx 7 mm, tube 4.5 mm, lobes 2.5 mm; corolla purple. |
12.5–14.5 mm; calyx 7.5–10.2 mm, tube 5.2–5.8 mm, lobes 1.8–4.4 mm; corolla bright pink-purple with pale, striate eye. |
Legumes | mottled, ovoid-acuminate, moderately inflated, 20–24 × 8–12 mm, stiffly papery, strigulose; beak incurved, 4.5–7 mm, bilocular. |
purplish, often red-mottled, becoming stramineous, ellipsoid to lanceoloid-ovoid or ellipsoid-acuminate, moderately inflated, 23–34 × 6–15 mm, bilocular, stiffly papery or almost leathery, usually glabrous, rarely puberulent; beak well-defined, triangular or deltoid, 7–12 mm, unilocular. |
Seeds | 18. |
40. |
Astragalus lentiginosus var. piscinensis |
Astragalus lentiginosus var. negundo |
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Phenology | Flowering Jun–Jul. | Flowering late Apr–Jun. |
Habitat | Saline seep, moist at least in springtime, growing with Ivesia, Juncus, and other herbs. | Salt and sand desert shrub communities with shadscale, greasewood, sagebrush, and horsebrush, in pinyon-juniper communities. |
Elevation | 1200–1300 m. (3900–4300 ft.) | 1400–1700(–2300) m. (4600–5600(–7500) ft.) |
Distribution |
CA |
UT |
Discussion | Variety piscinensis is known from Fish Slough northwest of Bishop in Mono County. It is similar in habit to vars. multiracemosus and sesquimetralis. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety negundo, which is known from Box Elder, Millard, and Tooele counties, fills a portion of the gap in distribution between var. platyphyllidius, with which it shares relatively thick-textured fruits, and var. chartaceus, with which it is transitional to the south. From either taxon, the elongated fruit is evidently diagnostic, apparent only as fruits approach maturity. The lower flower number is characteristic of var. negundo and is more or less diagnostic. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Barneby: Brittonia 29: 378, fig. 2. (1977) | S. L. Welsh & N. D. Atwood in S. L. Welsh: N. Amer. Sp. Astragalus, 302, fig. 285u. (2007) |
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