Lathyrus vestitus |
Lathyrus hirsutus |
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canyon pea, common Pacific pea, Pacific pea, Pacific peavine, Pacific vetchling, wild sweetpea |
Caley pea, hairy vetch, rough pea, singletary pea |
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Habit | Herbs perennial, from rhizome, glabrous or sparsely to densely pubescent. | Herbs annual, glabrous, except legumes. | ||||||||
Stems | angled to narrowly winged, sprawling or climbing, basally branched 0–4 times, 2–20 dm. |
winged, sprawling, basally branched 0–several times, 2–10 dm. |
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Leaves | 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. |
0.8–3 cm, rachises narrowly winged; tendrils well developed; stipules linear, 5–10 × 1–3 mm, much smaller than leaflets; leaflets 2, blades lanceolate to linear, 25–75 × 5–12 mm, surfaces glabrous. |
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Inflorescences | 5–20-flowered, 5–25 cm. |
1- or 2-flowered, 4–15 cm. |
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Flowers | 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. |
8–10 mm; calyx lobes subequal, lateral lobes linear-triangular, longer than tube; corolla blue to red, banner erect, blade 2 times as long as claw, wings equal to keel; ovary densely pustulose-based pubescent, style rotated 90° from ovary axis. |
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Legumes | 40–60 × 4–7 mm. |
25–40 × 5–10 mm. |
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2n | = 14. |
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Lathyrus vestitus |
Lathyrus hirsutus |
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Phenology | Flowering Apr–Jul. | |||||||||
Habitat | Roadsides, pastures, railroad rights-of-way, disturbed areas. | |||||||||
Elevation | 0–1500 m. (0–4900 ft.) | |||||||||
Distribution |
w United States; nw Mexico
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AL; AR; CA; FL; GA; IL; IN; KY; LA; MD; MI; MO; MS; NC; NM; OK; OR; SC; TN; TX; VA; Europe [Introduced in North America; introduced also in South America (Argentina, Chile, Uruguay), n, e Africa]
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Discussion | Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lathyrus hirsutus is cultivated as a forage crop. (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: 276. (1838) | Linnaeus: Sp. Pl. 2: 732. (1753) | ||||||||
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