Astragalus lentiginosus var. pohlii |
Astragalus lentiginosus var. chartaceus |
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pohil's milkvetch, pohl's milkvetch |
broadleaf milkvetch, cobweb milkvetch |
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Habit | Plants perennial, 7–20 cm. | Plants perennial, 10–35 cm. |
Stems | diffuse and incurved-ascending, often red-tinged. |
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Leaves | (4–)5–9 cm; leaflets 11–17, blades broadly obovate-cuneate or suborbiculate, 4–11 mm, apex obtuse or retuse to emarginate. |
(2.5–)4–11 cm; leaflets (9 or)11–23, blades elliptic-oblanceolate, broadly oblong-oblanceolate, or obovate, (3–)5–17(–20) mm, apex obtuse or emarginate. |
Racemes | shortly and loosely 3–9-flowered, short and compact in fruit; axis 1–3.5 cm in fruit. |
(5–)10–20-flowered, flowering from middle and distally, short and compact in fruit; axis (0.5–)1.5–4(–5.5) cm in fruit. |
Peduncles | 1–4 cm. |
(1–)2.5–6(–7.5) cm. |
Flowers | 20–23 mm; calyx 8.5–10.5 mm, tube 8–10 mm, lobes 2.4–3 mm; corolla whitish tinged with violet. |
(12.5–)15–18.2 mm; calyx (6.2–)7.5–10.5 mm, tube (4.6–)5.2–6.7 mm, lobes 1.4–3.8 mm; corolla bright pink-purple with pale, striate eye. |
Legumes | pale green or purple-speckled becoming stramineous or brownish, plumply ovoid, strongly inflated, 23–33 × 10–15 mm, ± bilocular, leathery or stiffly papery, minutely strigulose; beak 5–15 mm, unilocular; stipe 0.5–1.5 mm. |
green, often red-mottled, becoming stramineous, usually strongly incurved, ovoid, lanceoloid-ovoid, or ovoid-acuminate, moderately inflated, 15–30(–40) × (7–)9–15 mm, bilocular, stiffly papery or almost leathery, usually glabrous, rarely puberulent; beak well-defined, triangular or deltoid, 6–15 mm, unilocular. |
Seeds | 24–32. |
24–34(–38). |
Astragalus lentiginosus var. pohlii |
Astragalus lentiginosus var. chartaceus |
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Phenology | Flowering May–Jun. | Flowering May–Jul. |
Habitat | Greasewood, shadscale, horsebrush, and big sagebrush communities, vegetated sand dunes. | Sagebrush, pinyon-juniper, and mixed desert shrub communities, on alluvial silt, igneous gravel. |
Elevation | 1300–1700 m. (4300–5600 ft.) | 1400–2200 m. (4600–7200 ft.) |
Distribution |
UT |
NV; UT |
Discussion | Variety pohlii is restricted to the Rush and Skull valleys in Tooele County. The shortly stipitate fruit is unusual among varieties of Astragalus lentiginosus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety chartaceus is widespread from central to western Utah into northeastern and central Nevada, there intergrading with vars. fremontii, kennedyi, and toyabensis. S. L. Welsh (2007) discussed the problems of including this variety in an expanded var. diphysus and its complex relationships to other varieties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. araneosus, A. lentiginosus var. araneosus | |
Name authority | S. L. Welsh & Barneby: Iselya 2: 1. (1981) | M. E. Jones: Proc. Calif. Acad. Sci., ser. 2, 5: 673. (1895) |
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