Lathyrus polyphyllus |
Lathyrus venosus |
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leafy pea, leafy peavine, Oregon pea |
bushy vetchling, veiny pea, veiny peavine |
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Habit | Herbs perennial, from rhizome, glabrous. | Herbs perennial, from rhizome, glabrous or pubescent. | ||||||||
Stems | angled, erect, sprawling, or climbing, basally branched 0–2 times, 4–8 dm. |
angled, sprawling or climbing, basally branched 0–3 times, 4–10 dm. |
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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. |
6–18 cm; tendrils well developed; stipules lanceolate to linear, 10–20 × 2–10 mm, much smaller than distal leaflets (less than 1/4 width of distal leaflets); leaflets 8–14, scattered, blades ovate to lanceolate, 25–70 × 10–35 mm, surfaces glabrous or pubescent. |
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Inflorescences | 8–12-flowered, 9–14 cm. |
5–20-flowered, 6–20 cm. |
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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. |
10–15 mm; calyx lobes unequal, lateral lobes linear-triangular or lanceolate, shorter to longer than tube; corolla blue-purple to rose, banner erect, blade equal to claw, wings equal to keel; ovary glabrous or pubescent. |
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Legumes | 40–70 × 4–9 mm. |
20–50 × 3–7 mm. |
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2n | = 14. |
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Lathyrus polyphyllus |
Lathyrus venosus |
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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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North America
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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.) |
Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 11. | FNA vol. 11. | ||||||||
Parent taxa | Fabaceae > subfam. Faboideae > Lathyrus | Fabaceae > subfam. Faboideae > Lathyrus | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Name authority | Nuttall in J. Torrey and A. Gray: Fl. N. Amer. 1: 274. (1838) | Muhlenberg ex Willdenow: Sp. Pl. 3: 1092. (1802) | ||||||||
Web links |