1Twigs at apex with hairs 0.2(-0.3) mm long. Lateral nerves c. 10 pairs. Male buds 2.5 mm diameter, with hairs 0.1 (-0.2) mm long. [Inflorescences sessile; male pedicel 2 mm long; anthers 8, short-stiped.].
1'Twigs at apex with hairs 0.3-0.6 mm long. Lateral nerves 18-26 pairs. Male buds 3.5-5 mm diameter, with hairs 0.4-l(-2) mm long.
2Leaves narrow, oblong or lanceolate, 2-5.5 cm wide, base attenuate to obtuse. Inflorescences 1-4 mm pedunculate. Male buds 4 mm diameter; pedicel 2-3 mm long; anthers 7-9, almost entirely sessile.
2'Leaves broader, elliptic to oblong-lanceolate, 4-14 cm wide, base broadly rounded or shallowly cordate, rarely subattenuate. Inflorescences sessile or up to 1 mm pedunculate. Male buds 3.5-5 mm diameter; pedicel 2-8 mm long; anthers 13-21, half-sessile to just stiped.