Twining plant. Leaf trifoliolate, leaflets 7.5-12.5 cm long, broadly rhombic ovate, acute. Inflorescence a peduncled raceme, peduncle nearly equalling or sometimes exceeding the leaves. Calyx and bract subequal. Corolla scarlet or white, 1.8-2.5 cm long. Keel forming 1-2 spirals. Fruit 10-30.0 cm long, sparsely pubescent or subglabrous, beaked.

Distribution: Native of South America, cultivated in Pakistan.

Scarlet Runner Bean is cultivated as an ornamental plant.