perennial, monœcious, pale green, stem and branches very long, angulate, scabrous; tendrils elongate; leaves deeply palmately 5–7- lobed; lobes lanceolate, lobulate and dentate, acute, the middle longer, subglabrous above, very scabrous beneath; pepo ovoid, with very short, weak prickles. Root perennial (Zeyher msc.). Stem often 4–6 feet long, creeping, hooked scabrous on the 5 angles, especially on the branches. Tendrils 2–3 inches, petioles about 1 inch long, hispid-scabrous. Leaves 1 1/2–2 inches long and broad, all the lobes lobulate and inciso-dentate, the middle acutely 5-lobed. Male flowers fascicled, nearly 1/2 inch; female ones solitary. Fruit 10 lines long, 8 lines in diameter; prickles 1–1 1/2 line long. Seeds oblong, not margined. It comes very near the preceding, but the leaves are more compound and the lateral lobes longer and acute.
