Lathyrus lanszwertii |
Lathyrus polyphyllus |
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aspen peavine, lanszwert's pea, lanszwert's vetchling, Nevada pea, Nevada peavine, Nevada sweet pea, pinewood peavine, Rocky Mountain sweetpea, thick-leaf pea, thick-leaf peavine |
leafy pea, leafy peavine, Oregon pea |
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Habit | Herbs perennial, from rhizome, glabrous or sparsely pubescent. | Herbs perennial, from rhizome, glabrous. | ||||||||||||||||
Stems | angled, erect, sprawling, or climbing, basally branched 0–4 times, 1–8 dm. |
angled, erect, sprawling, or climbing, basally branched 0–2 times, 4–8 dm. |
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Leaves | (0.5–)1–8 cm; tendrils mucronate to well developed; stipules linear to lanceolate, 5–25 × 1–6 mm, much smaller than leaflets; leaflets 2–10, scattered, blades lanceolate or linear, 20–70 × 2–20 mm, surfaces glabrous or sparsely pubescent. |
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. |
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Inflorescences | 2–6-flowered, 2–10 cm. |
8–12-flowered, 9–14 cm. |
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Flowers | 7–15 mm; calyx lobes unequal, lateral lobes deltate, shorter than tube; corolla white or blue-purple, banner erect, blade equal to claw, wings equal to keel; ovary glabrous. |
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. |
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Legumes | 25–45 × 6–10 mm. |
40–70 × 4–9 mm. |
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2n | = 14. |
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Lathyrus lanszwertii |
Lathyrus polyphyllus |
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Phenology | Flowering Apr–Jul. | |||||||||||||||||
Habitat | Openings in coniferous forests. | |||||||||||||||||
Elevation | 0–1800 m. (0–5900 ft.) | |||||||||||||||||
Distribution |
w North America
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CA; OR; WA
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Discussion | Varieties 5 (5 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
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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 | Kellogg: Proc. Calif. Acad. Sci. 2: 150, fig. 44. (1863) | Nuttall in J. Torrey and A. Gray: Fl. N. Amer. 1: 274. (1838) | ||||||||||||||||
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