Herbs or vines, annual or per­ennial, herbaceous, 1–2(–9) m. Stems erect or twining, sparsely pubescent to glabrate. Leaves: petiole 5.8–8 cm; petiolules 5–7.5 mm, sparsely pubescent, hairs 0.3–0.6 mm; leaflet blades ovate-elliptic or ovate, 70–200 × 50–90 mm, base cuneate, apex acuminate, surfaces glabrate. Panicles to 45 cm; bracteoles 0.5–1 × 0.7–1.4 mm, apex obtuse. Pedicels 2–2.2 mm, glabrous or strigillose. Flowers: calyx 11–16 mm; central lobe of abaxial lip equaling obtuse lateral lobes; corolla bicolored (purple and white) or white, 25–35 mm. Legumes slightly compressed, narrowly oblong, 20–40 × 2.5–5 cm. Seeds 6–9, usually red to red-brown, rarely white, moderately compressed, oblong, to 2–3.5 × 1.5–2 cm; hilum 1/2+ length of seed. 2n = 22.

Phenology: Flowering Aug–Sep.
Habitat: Waste places.
Elevation: 0–100 m.

Distribution

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La., Miss., Mo., S.C., Tex., se Asia, introduced also in Mexico, West Indies, Central America, South America, Africa, Pacific Islands, Australia.

Discussion

Selected References

None.

Lower Taxa

None.