The annual stems twining or prostrate or sprawling, patently pubescent with rigid trichomes. Leaves orbicular to transversely elliptic in outline, palmately divided nearly to the base, (3-) 5-7 (-9)-lobed, the segments oblong to elliptic, attenuate to acuminate on both ends, acute to obtuse apically, pubescent with appressed or patent trichomes, 3-7.5 cm long, often wider than long. Flowers involucrate-cymose. Sepals lanceolate or the inner narrow-lanceolate, 7-12 mm long, pubescent. Corolla funnel-shaped, white, 3-4 cm long. Fruits capsular, ovoid, 8 mm long. Seeds gray tomentose, 4 mm long.