*Climbing herbs with milky juice, up to 9 m long. *Leaves spirally arranged, palmatinerved, long petiolate; in ''C. quinqueloba'' leaf-blade broadly ovate in outline, 3-5(-9)-lobed, membraneous, 4-17 cm × 3-16 cm; in ''C. moluccana'' leaf-blade entire, chartaceous, ovate-cordate, up to 24 cm × 22 cm. On the edge of forest and thickets and in open places such as limestone outcrops. Mostly at low elevations but sometimes up to 1500 m altitude.