Astragalus lentiginosus var. latus |
Astragalus lentiginosus var. platyphyllidius |
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freckled milkvetch, schell creek milkvetch |
broad-leaf freckled milkvetch, broad-leaf milkvetch |
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Habit | Plants perennial, 5–17 cm. | Plants perennial, (7–)10–30(–35) cm. |
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. |
(4–)5–11 cm; leaflets (7–)11–17(or 19), blades usually broadly obovate-cuneate, elliptic, or suborbiculate, rarely rhombic-elliptic, (4–)7–20 mm, apex usually obtuse, retuse, truncate, or apiculate, rarely acute. |
Racemes | shortly and loosely 5–12(–18)-flowered, short and compact in fruit; axis 0.7–2(–4) cm in fruit. |
shortly and loosely (5–)7–15-flowered, flowering from near or proximal to middle nodes, short and compact in fruit; axis little elongating, 1–3.5 cm in fruit. |
Peduncles | 1.5–6 cm. |
1–5 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. |
(12.6–)14–21.4 mm; calyx (8–)8.5–12.5 mm, tube (5–)5.5–8(–9) mm, lobes 2.4–5 mm; corolla usually whitish, rarely 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. |
variable in length, outline, and curvature, pale green or purple-speckled becoming stramineous or brownish, plumply ovoid or narrowly lanceoloid-ellipsoid, (13–)15–40(–48) × 7–14 mm, ± bilocular, strongly or slightly inflated, ± fleshy becoming leathery or stiffly papery, usually glabrous, sometimes minutely strigulose; beak deltoid or lanceolate-acuminate, 5–15 mm, unilocular. |
Seeds | (12–)22–28. |
(21–)24–32(–38). |
Astragalus lentiginosus var. latus |
Astragalus lentiginosus var. platyphyllidius |
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Phenology | Flowering May–Jul. | Flowering May–Jul. |
Habitat | Open, gravelly slopes in timber belt. | Arid plains, hillsides, and valley floors, on basalt, with sagebrush. |
Elevation | (1700–)2200–3000 m. ((5600–)7200–9800 ft.) | 600–1900(–2100) m. (2000–6200(–6900) ft.) |
Distribution |
NV |
CA; CO; ID; NV; OR; UT; WY |
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 platyphyllidius is dispersed widely from eastern Oregon and northeastern California, across southern Idaho into western Wyoming, northeastern Nevada, and barely into northern Utah and northwestern Colorado. It is apparently common only locally, distinguished by its typically pale flowers and thick-textured fruits (approximate length of two times width or less). (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 | Cystium platyphyllidium, A. lentiginosus var. cornutus, A. merrillii, C. cornutum, C. merrillii |
Name authority | (M. E. Jones) M. E. Jones: Rev. N.-Amer. Astragalus, 125. (1923) | (Rydberg) M. Peck: Man. Pl. Oregon, 449. (1941) — (as platyphyllidium) |
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