KEY TO THE SUBSPECIES

1Leaves thinly chartaceous; lower surface (sub)glabrescent, hairs sparse, greyish, scalelike, less than 0.1 mm. Fruits broadly ovoid(ellipsoid), 2.5 cm long.
1'Leaves subcoriaceous; lower surface with dense pale brown scale-like hairs, 0.1 mm. Fruits ± (long-)ellipsoid, 3 cm long.