Slender annual twiners covered with weak uncinate hairs on all parts. Leaves alternate, long-petiolate, the blade very deeply and palmately divided and coarsely dentate, broadly ovate-reniform, deeply cordate. Inflorescence extra-axillary, several times dichasial with the ultimate branches monochasial, bearing numerous rather small sessile flowers. Calyx lobes 5, subfoliaceous, valvate; petals 5, free, open in aestivation; stamens 5, antesepalous, all fertile; ovary 1-celled, containing a solitary pendulous ovule, the style rather slender, the stigma subcapitate. Fruit a small 5-winged cypsela crowned by the persistent calyx.
Home