Lathyrus venosus |
Lathyrus aphaca |
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bushy vetchling, veiny pea, veiny peavine |
yellow pea, yellow vetchling |
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Habit | Herbs perennial, from rhizome, glabrous or pubescent. | Herbs annual, glabrous. | ||||||||
Stems | angled, sprawling or climbing, basally branched 0–3 times, 4–10 dm. |
not winged, erect or climbing, basally branched 1–several times, 2–6 dm. |
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Leaves | 6–18 cm; tendrils well developed; stipules lanceolate to linear, 10–20 × 2–10 mm, much smaller than distal leaflets (less than 1/4 width of distal leaflets); leaflets 8–14, scattered, blades ovate to lanceolate, 25–70 × 10–35 mm, surfaces glabrous or pubescent. |
reduced to tendrils, unbranched or branched, 1–4 cm; stipules ovate, 10–35 × 10–25 mm, base hastate, margins entire; leaflets 0. |
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Inflorescences | 5–20-flowered, 6–20 cm. |
1-flowered, 2–4 cm. |
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Flowers | 10–15 mm; calyx lobes unequal, lateral lobes linear-triangular or lanceolate, shorter to longer than tube; corolla blue-purple to rose, banner erect, blade equal to claw, wings equal to keel; ovary glabrous or pubescent. |
6–10 mm; calyx lobes equal, lateral lobes broadly lanceolate, longer than tube; corolla yellow, banner erect, blade equal to claw, wings equal to keel; ovary glabrous. |
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Legumes | 20–50 × 3–7 mm. |
15–30 × 5–7 mm. |
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2n | = 14. |
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Lathyrus venosus |
Lathyrus aphaca |
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Phenology | Flowering May–Jun. | |||||||||
Habitat | Roadsides, waste areas. | |||||||||
Elevation | 0–700 m. (0–2300 ft.) | |||||||||
Distribution |
North America
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AL; AR; CA; KY; LA; MD; NE; OR; PA; TN; TX; WA; Eurasia [Introduced in North America; introduced also in n, e Africa]
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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 | ||||||||||
Name authority | Muhlenberg ex Willdenow: Sp. Pl. 3: 1092. (1802) | Linnaeus: Sp. Pl. 2: 729. (1753) | ||||||||
Web links |