Vicia nigricans |
Vicia lutea |
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black vetch, giant vetch, spring vetch, tiny vetch |
smooth yellow vetch, yellow vetch |
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Habit | Herbs annual. | |
Stems | erect, sprawling, or climbing, slender to robust, 2–6 dm. |
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Leaves | 2–6 cm; tendrils simple or branched; stipules foliose, approaching leaflets in size, semisagittate, with nectariferous patch abaxially; leaflets 6–16, blades oblong to lanceolate-linear, 8–20 × 1–5 mm, apex obtuse to truncate-emarginate, abaxial surface sparsely pubescent, hairs long, pustulose-based, adaxial glabrous. |
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Inflorescences | 1–3-flowered, 0 cm. |
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Flowers | 18–25 mm; calyx base symmetric, lobes unequal, abaxial lobe subequal to tube; corolla pale to bright yellow, banner stenonychioid, blade much longer than claw, glabrous; style compressed abaxially, pubescent apically, tufted abaxially. |
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Legumes | reddish black, elliptic, 25–35 × 7–14 mm, oblique-tipped, pilose, hairs tuberculate-based; stipe to 3–4 mm. |
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Seeds | 3–9, blackish and ± mottled, or velvety to entirely black, compressed-globose, 3 mm diam.; hilum whitish, linear, encircling 1/6–1/5 circumference of seed. |
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2n | = 14. |
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Vicia nigricans |
Vicia lutea |
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Phenology | Flowering Apr–May. | |
Habitat | Roadsides, fields. | |
Elevation | 0–500 m. (0–1600 ft.) | |
Distribution |
w North America; s South America (Argentina, Chile)
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AL; CA; FL; LA; NC; OR; TX; c Europe; s Europe; w Asia; n Africa [Introduced in North America]
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Discussion | Varieties 2 (1 in the flora). Variety nigricans is known from Pacific coastal areas of southern South America. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Vicia | Fabaceae > subfam. Faboideae > Vicia |
Sibling taxa | ||
Subordinate taxa | ||
Name authority | Hooker & Arnott: Bot. Beechey Voy., 20. (1830) | Linnaeus: Sp. Pl. 2: 736. (1753) |
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