Slender annual twiners, weakly uncinate-pilose in all parts. Leaves rather sparse, long-petiolate, the blade broadly ovate-reniform, deeply cordate, up to 8 cm. long and 9 cm. broad, deeply and palmately divided into usually five unequal, narrowly acuminate lobes, the middle somewhat longest, entire, the lateral decreasingly smaller and with 1 to several broad dentate incisions, the petiole up to 7-8 cm. long. Inflorescence about equaling the leaves, compound, bearing numerous rather small sessile flowers. Flowers greenish yellow; sepals oblong-lanceolate, acute, 5-6 mm. long; petals rather narrowly spatulate, acuminate, about 3 mm. long; stamens about 4 mm. long, the filaments scarcely longer than the anthers. Fruits pentag-onal-obovoid, about 3-4 mm. long, decurrently 5-winged from the tip, crowned by the persistent, somewhat accrescent sepals.
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