Lathyrus eucosmus |
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bush vetchling, seemly pea |
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Habit | Herbs perennial, from rhizome, glabrous or puberulent. |
Stems | angled, erect, basally branched 0–2 times, 2–5 dm. |
Leaves | 2–4 cm; tendrils simple or branched, sometimes prehensile; stipules linear, 5–15 × 1–2 mm, much smaller than leaflets; leaflets 6 or 8, scattered, blades ovate to lanceolate, 15–45 × 4–10 mm, surfaces glabrous throughout or puberulent abaxially. |
Inflorescences | 2–4-flowered, 7–12 cm. |
Flowers | 18–20 mm; calyx lobes unequal, lateral lobes deltate, shorter than tube; corolla blue-purple, banner erect, blade longer than claw, wings equal to keel (held above keel); ovary glabrous. |
Legumes | 40–50 × 8–10 mm, short-stipitate. |
2n | = 14. |
Lathyrus eucosmus |
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Phenology | Flowering Apr–Jun. |
Habitat | Dry soils in washes, pinyon-juniper woodlands, oak-brush, ponderosa pine forests, open prairies, grasslands. |
Elevation | 1200–2500 m. (3900–8200 ft.) |
Distribution |
AZ; CO; NM; TX; UT; WY; Mexico (Coahuila)
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Discussion | Lathyrus eucosmus is known from the northern two-thirds of Arizona northward to southeastern Utah, and eastward in southeastern Wyoming, Colorado, New Mexico, and Texas to the edge of the Great Plains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Lathyrus |
Sibling taxa | |
Synonyms | L. brachycalyx subsp. eucosmus, L. brachycalyx var. eucosmus |
Name authority | Butters & H. St. John: Rhodora 19: 160. (1917) |
Web links |