Herbs climbing and twining. Stems slender, 1-3 m, usually glabrous. Stipules small, linear-lanceolate, 2-4 mm, 3-veined; petiole slender, 3-7 cm, glabrous; petiolules 2-3 mm, glabrous; stipels setiform, ca. 1 mm; leaflets membranous, triangular or ovate-triangular, usually 3-6 × 2.3-3.5 cm, both surfaces usually glabrous or sparsely hirsute abaxially, base truncate or rounded, apex ± rounded, sometimes slightly emarginate with mucro; lateral leaflets slightly smaller, base slightly oblique. Raceme axillary, slender, 1-4 cm, usually glabrous; peduncle short; bracts and bracteoles small. Flowers 1.2-2 cm; pedicel 1-3 mm. Calyx ca. 6 mm, glabrous. Corolla yellow or light yellow; standard elliptic to slightly obovate; wings and keels almost elliptic, slightly curved, slightly shorter than standard, with long claws, with a small auricle at base of one side. Ovary linear-oblanceolate, glabrous; ovules 3-5; style slender, glabrous. Legume oblanceolate to lanceolate-elliptic, ca. 4 × 0.9 cm, slightly inflated, base acuminate, apex with beak. Seeds usually 2-5, blue, compressed, globose, 4-6 mm in diam. Fl. Aug-Sep, fr. Oct-Nov.
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A climbing and twining herb. It grows 1-3 m long. The stems are slender. It has leaflets that are triangle shaped and 3-6 cm long by 2-4 cm wide. The flowers are in slender groups 1-4 cm long. The flowers are 1-2 cm across. They are yellow. The pod is sword shaped and 4 cm long by 1 cm wide. There is a beak at the tip. There are 2-5 seeds. They are flattened and blue. They are 4-6 mm across.
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