annual, green, scabrous; branches angulate-striate; leaves long petiolate, palmately 3, 5, 7-lobed, lobes and sinus rotundate, middle lobe larger, hispidulous-scabrous beneath; ovary roundish, densely muricate; pepo subglobose, beset with weakly prickles, caducous; peduncle slender. Leaves 1 1/2–2 inches long and wide, upper ones much smaller, usually on very long petioles, on the margins denticulate, with cordate base, subglabrous above, the middle lobe roundish, cuneate, more or less 3-lobed. Peduncles fascicled, much shorter than the hispid petiole. Flowers very small. Fruit usually very numerous, round or nearly so, 3/4–1 inch in diameter, densely or sparingly beset with bristle-like, 1 line long spines.
