Lathyrus eucosmus |
Lathyrus littoralis |
|
---|---|---|
bush vetchling, seemly pea |
beach pea, beach peavine, dune sweet pea, gray beach or silky beach pea, gray beach pea, grey beach peavine, silky beach pea, silky beach vetchling |
|
Habit | Herbs perennial, from rhizome, glabrous or puberulent. | Herbs perennial, from rhizome, cinereous and densely villous throughout. |
Stems | angled, erect, basally branched 0–2 times, 2–5 dm. |
angled, sprawling, basally branched 0–4 times, 1–4 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. |
1–3 cm; tendrils flattened bristles; stipules ovate to lanceolate, 10–27 × 5–12 mm, often larger than leaflets; leaflets 4 or 6, paired, blades obovate to oblanceolate, 10–20 × 4–8 mm, surfaces densely villous. |
Inflorescences | 2–4-flowered, 7–12 cm. |
4–8-flowered, 3–10 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. |
13–15 mm; calyx lobes equal, lateral lobes deltate, equal to or shorter than tube; corolla dark purple, banner erect, blade longer than claw, wings longer than keel; ovary densely pubescent. |
Legumes | 40–50 × 8–10 mm, short-stipitate. |
20–30 × 9–13 mm. |
2n | = 14. |
= 28. |
Lathyrus eucosmus |
Lathyrus littoralis |
|
Phenology | Flowering Apr–Jun. | Flowering Apr–Jun. |
Habitat | Dry soils in washes, pinyon-juniper woodlands, oak-brush, ponderosa pine forests, open prairies, grasslands. | Coastal sand dunes, deflation plain interdune areas. |
Elevation | 1200–2500 m. (3900–8200 ft.) | 0–15 m. (0–0 ft.) |
Distribution |
AZ; CO; NM; TX; UT; WY; Mexico (Coahuila)
|
CA; OR; WA; BC
|
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. | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Lathyrus | Fabaceae > subfam. Faboideae > Lathyrus |
Sibling taxa | ||
Synonyms | L. brachycalyx subsp. eucosmus, L. brachycalyx var. eucosmus | Astrophia littoralis |
Name authority | Butters & H. St. John: Rhodora 19: 160. (1917) | (Nuttall) Endlicher in W. G. Walpers: Repert. Bot. Syst. 1: 722. (1842) |
Web links |
|