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Vigna adenantha

Description from Flora of China

Phaseolus adenanthus G. Meyer, Prim. Fl. Esseq. 239. 1818.

Perennial herbs, twining. Stipules truncate at base and not produced below point of insertion, lanceolate, 3-5 mm; petiole 3.5-5(-9) cm; terminal leaflet rhomboid-ovate, 7-8 × 5-6.5 cm, nearly glabrous, base obtuse, apex acute; lateral leaflets some­what oblique. Racemes axillary, 9-17 cm including peduncle; pedicels 2-3 mm. Bracteoles ovate, ca. 4 mm, caducous. Calyx lobes acuminate. Corolla purple, 1.8-3 cm; standard orbicular; wings oblong, inconspicuously auriculate; keel spirally incurved for ca. 3 turns. Ovary glabrous. Legumes linear, 9-14 × 0.8-1.4 cm, glabrous, 11-15-seeded. Seeds dark brown, reniform, ca. 7 × 5 mm.

At roadsides. Taiwan [pantropical].


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