Lathyrus lanszwertii |
Lathyrus pauciflorus |
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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 |
few-flower pea, few-flower pea-vine, few-flower vetchling |
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Habit | Herbs perennial, from rhizome, glabrous or sparsely pubescent. | Herbs perennial, from rhizome or thickened rootstock, glabrous. | ||||||||||||||||||||
Stems | angled, erect, sprawling, or climbing, basally branched 0–4 times, 1–8 dm. |
angled, erect, sprawling, or climbing, basally branched 1–3 times, 3–8 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. |
6–9 cm; tendrils well developed; stipules ovate to lanceolate, 15–25 × 5–11 mm, much smaller than leaflets; leafets 6–10, scattered, blades lanceolate to linear or ovate, 20–80 × 2–35 mm, surfaces glabrous. |
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Inflorescences | 2–6-flowered, 2–10 cm. |
4–13-flowered, 5–18 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. |
12–20 mm; calyx lobes unequal, lateral lobes deltate, shorter than tube; corolla pale blue-lavender to purple, banner erect, blade longer than claw, wings longer than keel, (by 1–4 mm); ovary glabrous. |
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Legumes | 25–45 × 6–10 mm. |
30–50 × 5–10 mm. |
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Lathyrus lanszwertii |
Lathyrus pauciflorus |
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Distribution |
w North America
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w United States
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Discussion | Varieties 5 (5 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 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 | ||||||||||||||||||||
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Subordinate taxa | ||||||||||||||||||||||
Name authority | Kellogg: Proc. Calif. Acad. Sci. 2: 150, fig. 44. (1863) | Fernald: Bot. Gaz. 19: 335. (1894) | ||||||||||||||||||||
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