KEY TO THE SUBSPECIES

1Leaves elliptic-oblong to oblong-lanceolate, 9-29 cm; lower surface ± late glabres-cent, at first with dense woolly or arachnoid greyish stellate hairs, with a few emergent pale brown hairs. Male inflorescences axillary to leaves. Flowers with hairs 0.1-0.2 mm.
1'Leaves oblong-lanceolate to lanceolate, 9-13 cm; lower surface with scattered, minute brown scale-like hairs 0.1 mm or less. Male inflorescences sometimes axillary to reduced leaves, but then vegetative apical bud of twig present. Flowers with hairs 0.2-0.3 mm.