Lathyrus graminifolius |
Lathyrus angulatus |
|
---|---|---|
grass-leaf pea |
angle pea, angle pea vine |
|
Habit | Herbs perennial, from rhizome or woody rootstock, glabrous. | Herbs annual, glabrous. |
Stems | angled, sprawling or climbing, sometimes branched at flowering nodes, 2–6 dm. |
angled, erect, sprawling, or climbing, basally branched 1–several times, 1–5 dm. |
Leaves | 5–9 cm; tendrils usually well developed; stipules lanceolate to linear, 8–12 × 1–5 mm, much smaller than leaflets; leaflets 4–8, scattered, blades usually linear, rarely lanceolate, 30–80 × 1–20 mm, surfaces glabrous. |
0.3–1 cm; tendrils reduced to bristles on proximal leaves, well developed distally; stipules lanceolate, 10–20 × 2–4 mm, as wide as leaflets; leaflets 2, blades linear, 20–70 × 1–4 mm, surfaces glabrous. |
Inflorescences | 5–8-flowered, 10–18 cm. |
1-flowered, 2–7 cm, prolonged beyond flower into tendril-like structure. |
Flowers | 8–15 mm; calyx lobes subequal, lateral lobes deltate, shorter than tube; corolla white to blue-orchid, banner erect, blade equal to claw, wings equal to keel; ovary glabrous. |
8–10 mm; calyx lobes equal, lateral lobes deltate, shorter than tube; corolla blue-purple, banner erect, blade equal to claw, wings equal to keel; ovary glabrous. |
Legumes | 30–50 × 4–8 mm. |
20–40 × 3–5 mm, with indistinct reticulate venation. |
2n | = 14. |
= 14. |
Lathyrus graminifolius |
Lathyrus angulatus |
|
Phenology | Flowering Apr–Aug. | Flowering Mar–Jun. |
Habitat | Slopes of ponderosa pine, mixed conifer, spruce-fir and oak-juniper forests. | Disturbed areas, waste ground. |
Elevation | 1000–2800 m. (3300–9200 ft.) | 0–1000 m. (0–3300 ft.) |
Distribution |
AZ; NM; TX; Mexico (Chihuahua, Sonora)
|
CA; OR; WA; Europe [Introduced in North America; introduced also in Australia]
|
Discussion | Lathyrus graminifolius is known from the eastern half of Arizona to the western two-thirds of New Mexico and in trans-Pecos Texas. (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. palustris var. graminifolius | |
Name authority | (S. Watson) T. G. White: Bull. Torrey Bot. Club 21: 454. (1894) | Linnaeus: Sp. Pl. 2: 731. (1753) |
Web links |
|