| 1 | Stipe of ♀ flowers (1-)2-6 mm, in fruit (1-)3-13 mm. Gynophore in fruit 8-30 mm. Fruits (4-)6-13 cm, mostly with acute apex. Stipe of ♂ flowers 5-15 mm, as long as to longer than the remainder of the flower. Leaves orbicular to lanceolate-linear in outline with cordate to acute base, palmately to pinninerved, venation distinct or not. |
| 1' | Stipe of ♀ flowers c. 1 mm, in fruit 1-2 mm. Gynophore in fruit 3-13 mm. Fruits 2-7 cm. Stipe of ♂ flowers 3-8 mm, as long as to shorter than the remainder of the flower. Leaves orbicular to ovate in outline, with cordate to truncate base, mostly palmately nerved, venation distinct beneath. |
| 2 | Leaves subherbaceous to coriaceous, orbicular to lanceolate(-linear), entire to deeply 5-lobed, base cordate to acute, nerves palmate to pinnate, margin entire or dentate. Gland-bearing auricles well marked off from the blade, glands limited to the auricles. |
| 2' | Leaves strongly coriaceous, ovate-oblong to oblong, entire, base rounded to subacute, nerves pinnate, margin entire. Gland-bearing auricles broadly adnate with the blade, the glands extended on the blade. |
| 3 | Leaves mostly membranous, margin entire. Marginal glands mostly absent. Gland-bearing auricles ± peltately connate, sometimes free. Stipe of ♂ flowers about as long as the remainder of the flower. Filaments connate about halfway. Fruits 4-7 cm, apex obtuse. |
| 3' | Leaves ± coriaceous, margin entire or dentate. Marginal glands present. Gland-bearing auricles free. Stipe of ♂ flowers shorter than the remainder of the flower. Filaments more than halfway connate. |
| 4 | Leaves (sub)orbicular, up to 1 cm acuminate, distinctly reticulate at both sides. Fruits 2-3½ (-4) cm, apex obtuse. Thailand, Laos, Cambodia, southern S. Vietnam (Cochinchina). |
| 4' | Leaves suborbicular to ovate, 1-2 cm acuminate, reticulate only beneath. Fruits 4½-7 cm, apex acute. Great Coco I., Andamans & Nicobars. |
