Lathyrus polyphyllus |
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leafy pea, leafy peavine, Oregon pea |
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Habit | Herbs perennial, from rhizome, glabrous. |
Stems | angled, erect, sprawling, or climbing, basally branched 0–2 times, 4–8 dm. |
Leaves | 11–16 cm; tendrils well developed; stipules ovate to lanceolate, 20–30 × 10–30 mm, nearly equal to distal leaflets; leaflets 10–16, scattered, blades ovate to lanceolate, 30–50 × 10–30 mm, surfaces glabrous. |
Inflorescences | 8–12-flowered, 9–14 cm. |
Flowers | 15–18 mm; calyx lobes unequal, lateral lobes linear-triangular, equal to or longer than tube; corolla blue-purple, banner erect, blade longer than claw, wings equal to keel; ovary glabrous. |
Legumes | 40–70 × 4–9 mm. |
2n | = 14. |
Lathyrus polyphyllus |
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Phenology | Flowering Apr–Jul. |
Habitat | Openings in coniferous forests. |
Elevation | 0–1800 m. (0–5900 ft.) |
Distribution |
CA; OR; WA
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Discussion | Lathyrus polyphyllus is known from in and west of the Cascade Range. Lathyrus ecirrhosus A. Heller (1904), not Philippi (1892), is an illegitimate name that pertains here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Lathyrus |
Sibling taxa | |
Name authority | Nuttall in J. Torrey and A. Gray: Fl. N. Amer. 1: 274. (1838) |
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