KEY TO THE SPECIES IN MALESIA

1Slender climber. Lamina usually broadest below the middle, not acute at both apex and base; basal pair of nerves about equally prominent as the main lateral nerves, usually not running parallel to the margin and usually becoming indistinct at or below the middle of the lamina. Carpels 6.
1'Erect shrub or small tree. Lamina broadest at or slightly above the middle, both apex and base acute; basal pair of nerves much stronger than the lateral nerves, running ± parallel to margin and continuing prominently beyond the middle of the lamina. Carpels 3