1 | Trees or shrubs. |
1' | Lianas or climbing shrubs. |
2 | Flowers unisexual (pistillate rudiment present in staminate flowers); fruit compressed, bean-shaped, convex side black, ribbed, concave side with white cushion. |
2' | Flowers perfect; fruit not much compressed, without sharp ribs at one side and a cushion at the other side. |
3 | Leaves stellate-lepidote-pubescent, tertiary veins indistinct; petals united, glabrous inside. |
3' | Leaves without stellate-lepidote hairs, tertiary veins usually distinct; pe- tals free, pubescent inside. |
4 | Inflorescences about as long as or shorter than petiole, to 3 cm long; petals lanate on the midrib inside; ovary 2-3-celled; fruit dorso-ventrally compressed, ribbed, to 2 cm long. |
4' | Inflorescences much longer than petiole; petals pubescent on the midrib inside but not lanate; ovary 1-celled; fruit ellipsoid, 3-4 cm long. |
5 | Flowers not articulate to pedicel; petals glabrous inside |
5' | Flowers articulate to pedicel; petals pubescent inside. |
6 | Inflorescences axillary; anthers oblong, connective linear; mature fruit to 3 x 5 cm, purplish, glabrous. |
6' | Inflorescences terminal; anthers and connective triangular; mature fruit to 5x 8 cm, yellow to orange, densely puberulous. |