Annual herbs, twining. Stems slender, subglabrous. Stipules peltate, lanceolate, ca. 4 mm, sparsely hirsute; leaflets variable in size and shape, oblong-ovate, suborbicular, linear, linear-lanceolate, or ovate, 2-7 × 0.5-3 cm, subglabrous or sparsely strigose on both surfaces, base rounded or broadly cuneate, apex acute to obtuse. Racemes axillary, slender, 3-or 4-flowered. Bracteoles linear or linear-lanceolate. Calyx campanulate, ca. 3 mm; teeth 5, unequal. Corolla yellow; standard suborbicular, ca. 10 × 8 mm, deflexed; keel with long and acute auricle. Legumes terete, 3.5-6.5 × ca. 0.4 cm, glabrous. Seeds 4-8, dark gray to brownish, oblong, ca. 4 × 3 mm; hilum linear. Fl. and fr. Aug-Oct.
More
A climbing herb. It can be 4-5 m long. It grows each year from seeds. The leaflets are narrow. The flowers are yellow. The pods are smooth.
Home
