Lathyrus nevadensis |
Lathyrus ochroleucus |
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purple peavine, Sierra Nevada pea, Sierra Nevada sweet pea, Sierra pea, Sierra peavine |
cream pea, cream vetchling, cream-flower peavine, cream-flower sweet pea, creamy peavine, pale vetchling |
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Habit | Herbs perennial, from rhizome, pubescent except glabrous on legumes and leaflets adaxially. | Herbs perennial, from rhizome, glabrous except calyx ciliate. | ||||||||
Stems | angled, erect, sprawling, or climbing, basally branched 0–several times, 1–6 dm. |
angled, sprawling or climbing, basally branched 0–3 times, 3–8 dm. |
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Leaves | 2–10 cm; tendrils mucronate (less than 1 cm) to well developed; stipules linear, 5–25 × 1–8 mm, much smaller than leaflets; leaflets 4–12, usually scattered, blades broadly ovate to lanceolate or linear, (17–)20–110 × 2–30(–37) mm, surfaces usually glabrous, rarely finely pubescent. |
(2–)3–10 cm; tendrils well developed; stipules somewhat foliose, ovate-lanceolate, 15–35 × 5–20 mm, sometimes equal to distal leaflets; leaflets (5 or)6(–8), usually paired, blades broadly ovate to lanceolate, (20–)25–65 × 10–35(–42) mm, surfaces glabrous. |
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Inflorescences | 2–10-flowered, 3–15 cm. |
4–10(–13)-flowered, 3–12 cm. |
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Flowers | 12–22 mm; calyx lobes unequal, lateral lobes deltate, usually shorter than tube; corolla blue-purple to pink-purple or white, banner erect, blade longer than claw, wings equal to keel; ovary glabrous. |
10–15 mm; calyx lobes unequal, lateral lobes lanceolate, usually longer than tube; corolla cream-white, banner erect, blade longer than claw, wings equal to keel; ovary glabrous. |
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Legumes | 20–30(–45) × 5–10 mm. |
30–70 × 4–7 mm. |
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2n | = 14. |
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Lathyrus nevadensis |
Lathyrus ochroleucus |
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Phenology | Flowering Apr–Jul. | |||||||||
Habitat | Moist woodlands, clearings, thickets, glades, meadows. | |||||||||
Elevation | 0–1500 m. (0–4900 ft.) | |||||||||
Distribution |
w North America
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AK; IA; ID; IL; IN; MI; MN; MT; ND; NE; NJ; NY; OH; PA; SD; VT; WA; WI; WV; WY; AB; BC; MB; NT; NU; ON; QC; SK; YT
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Discussion | 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 | ||||||||||
Synonyms | L. nevadensis subsp. stipulaceus | |||||||||
Name authority | S. Watson: Proc. Amer. Acad. Arts 11: 133. (1876) | Hooker: Fl. Bor.-Amer. 1: 159. (1831) | ||||||||
Web links |