Annual, trailing or climbing herb. Stem angular, with scabridulous hairs. Leaves ovate, 12-18 cm long., 3-8-lobed,-lobes acute, hispidulous or scabridulous on both surfaces; petiole elongated, 8-20 mm long. Sepals spreading. Corolla c. 2.5 cm long, lobes oblong-lanceolate. Anthers 3-4 mm long. Female flowers solitary or rarely fascicled. Ovary fusiform, muricate. Fruit oblong and obscurely trigonous or cylindric, when young sparsely tuberculated, otherwise smooth and glabrous.