Lathyrus eucosmus |
Lathyrus grimesii |
|
---|---|---|
bush vetchling, seemly pea |
grimes' pea, grimes' vetchling |
|
Habit | Herbs perennial, from rhizome, glabrous or puberulent. | Herbs perennial, from rhizomelike rootstock, glabrous. |
Stems | angled, erect, basally branched 0–2 times, 2–5 dm. |
angled, erect, branched 0–2 times basally or from proximal nodes, 0.5–2 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. |
1–2 cm; tendrils reduced to bristles; stipules lanceolate to linear, 5–15 × 1–5 mm, much smaller than leaflets; leaflets 4 or 6, paired, blades ovate to obovate, 10–25 × 5–10 mm, surfaces glabrous. |
Inflorescences | 2–4-flowered, 7–12 cm. |
2–4-flowered, 4–6 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. |
14–17 mm; calyx lobes unequal, lateral lobes deltate, shorter than tube; corolla bicolored lavender and white, banner erect, blade longer than claw, wings longer than keel, 1–3 mm; ovary glabrous. |
Legumes | 40–50 × 8–10 mm, short-stipitate. |
25–30 × 8–10 mm, stipitate. |
2n | = 14. |
|
Lathyrus eucosmus |
Lathyrus grimesii |
|
Phenology | Flowering Apr–Jun. | Flowering Jun–Jul. |
Habitat | Dry soils in washes, pinyon-juniper woodlands, oak-brush, ponderosa pine forests, open prairies, grasslands. | Talus slopes in sagebrush communities. |
Elevation | 1200–2500 m. (3900–8200 ft.) | 1800–2600 m. (5900–8500 ft.) |
Distribution |
AZ; CO; NM; TX; UT; WY; Mexico (Coahuila)
|
NV |
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.) |
Lathyrus grimesii is known only from the northern Independence Range and southern Bull Run Mountains in Elko County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Lathyrus | 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) | Barneby in A. Cronquist et al.: Intermount. Fl. 3(B): 208, plate [p. 211], fig. s.n. [center right]. (1989) |
Web links |