Spurred Butterfly Pea is a climbing or prostrate herb, often forming tangled mats. Stems are slender and hairy. Leaves are trifoliate with leaflet oblong to ovate, 3-9 x 1.5-5 cm. The compact inflorescences are several-flowered, the standard-petal being blue to purple with darker veins and yellow-tinged, up to 4 x 3 cm, velvety outside, and with a spur scarcely 1 mm long. The fruits, up to 17 cm long and 7 mm broad, are ribbed near the sutures, with numerous seeds up to 5 x 3 x 2 mm and red-brown with black streaks. Spurred Butterfly Pea is native to Tropical America, now widely cultivated and naturalized.