Stem stout and all parts covered with short lax flaccid hairs. Leaves 4–7 in. broad, herbaceous, young thickly villous, broadly reniform, with a deep broad sinus, obscurely 5-lobed, subdigitately 7–12-veined, lobes very rounded, shortly rather sharply toothed; petioles short, stout, 1 in. long. Tendrils 2-fid. Peduncles 1-flowered. Male 3–4 in. long. Calyx-tube 1/3 in. long, between funnel- and bell-shaped; lobes lanceolate, recurved, acuminate, half as long as the tube. Corolla-lobes about 1 in. long, yellow-white (Welw.). Fruit shortly peduncled, “sub-cylindric, orange-red, 2 1/2–3 in. long, 1–1 1/2 in. diameter, smooth, smelling of cucumbers. Seeds black, narrow, obovoid, compressed, smooth, rather contracted at the truncate base, not shining nor margined.” Welw.
