KEY TO THE SPECIES

1Leaves entire or nearly so. ♂ Inflorescence a much-branched many-flowered panicle with up to 150 flowers. Pistillode rather well-developed, c. 1-1½ by ½-l mm. Stigmatic arms bilobed or bifid at the tip.
1'Leaves serrulate to denticulate at least in the upper half. ♂ Inflorescence racemose, 5-20-flowered. Pistillode strongly reduced in size or absent. Stigmatic arms entire.
2Leaves rugose, brittle, sparsely pubescent beneath; midrib and lateral nerves strongly raised beneath. Stipules not peltately attached, free from one another. Fruit densely appressed-hairy.
2'Leaves not rugose, not brittle, glabrous; midrib and nerves only slightly raised beneath. Stipules peltately attached, overlapping. Fruit glabrous.
3Leaves with (2-)3-5 pairs of nerves.
3'Leaves with 1 pair of nerves.
4Leaves elliptic-orbicular or elliptic-oblong, index (l¼) l½(—2); midrib and nerves slightly raised beneath; lowest pair of nerves running to ⅔-¾ the length of the leaf, upper pairs of nerves ascending and arcuating. Stigmatic arms shallowly bilobed at the tip. Fruit globose, 16-20 by 14-18 mm.
4'Leaves elliptic or ovate-eliptic, index (l ½ -)2-2½ (-3); midrib and nerves flattish beneath; lowest pairs of nerves running up to ⅓ -½(- ⅔) the length of the leaf; upper pairs of nerves weak, sub-horizontal. Stigmatic arms deeply bifid at the tip. Fruit ovoid or ellipsoid, 7-12 by 5-8 mm.
5Nerves 3-5 pairs; lowest pair running to ⅓-½ the length of the leaf. Inflorescence mostly ♂ or ⚥. Stamens of ⚥ flower rudimentary, non-functional. Fruit ovoid, feebly 4-5-angular in CS; endocarp with reticulate ridges
5'Nerves 1—2(—3) pairs; lowest pair running up to ⅔ the length of the leaf. Inflorescence ♂ or ♂⚥. Stamens of 5 flower well-developed and functional. Fruit ellipsoid, ± terete; endocarp smooth.
6Leaf symmetrical. Inflorescence (♂or ♂⚥. ♂ Inflorescence 15-40-flowered. Cotyledons curved but not folded.
6'Leaf oblique. Inflorescence ♂ and ⚥ ♂ Inflorescence 60-150-flowered. Cotyledons curved and many times folded
7Leaves (4—)8-14(-18) by (2-)3-6(-8) cm; reticulations fine, dense. Ovary glabrous. Fruit 8-15 by 7-12 mm; endocarp smooth
7'Leaves (8—) 15—18(—25) by (6—)8—12(—18) cm; reticulations coarse, wide-spaced. Ovary densely appressed-pubescent. Fruit 15-25 by 10-18 mm; endocarp pitted
8Leaf not strongly oblique in outline; nerves 1—2(—3) pairs. Inflorescence ♂ and ♂ ⚥; ♂ flower 5-merous.
8'Leaf strongly oblique; nerves 3-4 pairs. Inflorescence ♂ and ⚥; ♂ flower 4-merous.
9Leaves (6-)10-12(-17) by (2 ½ -)4-5(-8) cm, index 1 ½ ½-2 ½. ♂ Inflorescence 10-20-flowered. Ovary glabrous. Infructescence 4-5 cm long. Fruit ovoid, strongly beaked, 5-10 by 3-6 mm.
9'Leaves (3-)4-5(-6 ½) by (l¼)l½ -2½ (-3½) cm, index 2-3.3. ♂ Inflorescence 5-7-flowered. Ovary densely hairy. Infructescence c. 1½ cm. long. Fruit globose, not beaked, c. 3 by 3 mm