Lathyrus nissolia |
Lathyrus vestitus |
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grass pea, grass vetchling |
canyon pea, common Pacific pea, Pacific pea, Pacific peavine, Pacific vetchling, wild sweetpea |
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Habit | Herbs annual, glabrous. | Herbs perennial, from rhizome, glabrous or sparsely to densely pubescent. | ||||||||
Stems | not winged, erect or sprawling, basally branched 1–several times, 1–8 dm. |
angled to narrowly winged, sprawling or climbing, basally branched 0–4 times, 2–20 dm. |
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Leaves | phyllodic; tendrils absent; stipules filiform-linear, 1–2 × 1 mm, much smaller than phyllode, base semisaggitate; leaflets 0; phyllodes flattened, linear, and grasslike, 80–140 × 4–10 mm, glabrous. |
4–14 cm; tendrils well developed; stipules lanceolate to linear, 5–25 × 1–10 mm, much smaller than leaflets (more than 1/4 width of distal leaflets); leaflets 6–12, scattered, blades ovate to linear, 12–50 × 5–25 mm, surfaces glabrous or pubescent. |
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Inflorescences | 1- or 2-flowered, 6–10 cm. |
5–20-flowered, 5–25 cm. |
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Flowers | 8–10 mm; calyx lobes equal, lateral lobes deltate, equal to tube; corolla crimson, banner erect, blade equal to claw, wings equal to keel; ovary glabrous or pubescent. |
12–25 mm; calyx lobes unequal, lateral lobes deltate, linear-triangular, or lanceolate and wider distal to base, shorter to longer than tube; corolla cream-white, rose, lavender, blue-purple, or deep wine red, banner erect or reflexed toward calyx tube, blade equal to or longer than claw, wings equal to keel; ovary glabrous or pubescent. |
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Legumes | 30–60 × 2–4 mm. |
40–60 × 4–7 mm. |
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2n | = 14. |
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Lathyrus nissolia |
Lathyrus vestitus |
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Phenology | Flowering Apr–May. | |||||||||
Habitat | Disturbed areas, grassy meadows. | |||||||||
Elevation | 50–150 m. (200–500 ft.) | |||||||||
Distribution |
OR; WA; Europe [Introduced in North America; introduced also in n Africa] |
w United States; nw Mexico
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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 | ||||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Name authority | Linnaeus: Sp. Pl. 2: 729. (1753) | Nuttall in J. Torrey and A. Gray: Fl. N. Amer. 1: 276. (1838) | ||||||||
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