Astragalus lentiginosus var. latus |
Astragalus lentiginosus var. wilsonii |
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freckled milkvetch, schell creek milkvetch |
wilson's milkvetch |
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Habit | Plants perennial, 5–17 cm. | Plants perennial, 20–50 cm, herbage green or subglabrescent. |
Stems | usually ascending, rarely prostrate. |
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Leaves | (4–)6–13 cm; leaflets 11–17(–23), blades broadly obovate, ovate, or broadly oblanceolate, (4–)6–15 mm, apex shallowly notched or obtuse. |
(3.5–)6–16 cm; leaflets (11–)17–25, blades ovate, broadly elliptic, or oblong-obovate, (4–)6–20(–25) mm, apex obtuse to emarginate. |
Racemes | shortly and loosely 5–12(–18)-flowered, short and compact in fruit; axis 0.7–2(–4) cm in fruit. |
shortly and loosely (7–)10–17(–22)-flowered; axis not elongating, 1.5–4(–13) cm in fruit. |
Peduncles | 1.5–6 cm. |
2.5–7(–8) cm. |
Flowers | (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. |
(14.2–)15–20 mm; calyx (7–)7.7–9.4 mm, tube (5.5–)5.7–7.7 mm, lobes 1.5–3 mm; corolla white or suffused or tipped pink or pink-purple. |
Legumes | 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. |
green or mottled becoming stramineous or brownish, narrowly lanceoloid-acuminate, scarcely to moderately inflated, (15–)20–35 × 3.8–7 mm, ± bilocular, stiffly papery, glabrous or puberulent; beak 5–10 mm, unilocular. |
Seeds | (12–)22–28. |
(29–)32–41. |
2n | = 22. |
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Astragalus lentiginosus var. latus |
Astragalus lentiginosus var. wilsonii |
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Phenology | Flowering May–Jul. | Flowering Feb–Jun. |
Habitat | Open, gravelly slopes in timber belt. | Ponderosa pine forests, oak and juniper communities on volcanic substrates. |
Elevation | (1700–)2200–3000 m. ((5600–)7200–9800 ft.) | 900–2200 m. (3000–7200 ft.) |
Distribution |
NV |
AZ |
Discussion | 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.) |
Variety wilsonii occurs on the Coconino Plateau near Flagstaff and near the head of the Verde River in southwestern Coconino, northwestern Gila, and eastern Yavapai counties. Some plants share features with the closely adjacent, but still disjunct, var. maricopae, as discussed by S. L. Welsh (2007). M. E. Jones (1923) placed these in var. palans, a taxon well to the north. Provisionally, these unusual plants form a portion of what has traditionally been understood as var. wilsonii. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. diphysus var. latus | A. wilsonii |
Name authority | (M. E. Jones) M. E. Jones: Rev. N.-Amer. Astragalus, 125. (1923) | (Greene) Barneby: Leafl. W. Bot. 4: 139. (1945) |
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