Vines herbaceous. Stems sulcate, glabrous; tendrils unbranched. Leaves: petiole 1–5 cm, glabrous; blade ovate to deltate or pentagonal, unlobed or shallowly to deeply 3–5-lobed, 5–14 × 5–13 cm, terminal lobe oblong-lanceolate, broadest at base, lateral lobes often sublobed, base cordate to truncate or rounded, margins remotely serrulate or denticulate, surfaces hirsute-hispidulous abaxially (not white-sericeous), pustulate-scabrous adaxially. Flowers: sepals deltate to triangular, 1–2 mm; petals pale green to whitish, corolla 6–10 mm; pistillate flowers solitary, axillary, or 3–5 on short racemoid branches, staminate flowers solitary, axillary. Fruits usually 1, axillary, or 3–5 on racemoid branches, orange to golden brown, short ellipsoid-cylindric, 1.5–2 cm; peduncle 8–15(–30) mm. Seeds usually 3, 10 mm.
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