KEY TO THE SUBSPECIES

1Leaves coriaceous. Lower leaf surface with inconspicuous, sparse, minute hairs of variable size, subpersistent or glabrescent. Fruits flanged along the line of suture or not.
1'Leaves rigidly coriaceous. Indumentum of lower leaf surface largely persistent, of densely set minute stellate hairs, mixed with fewer emergent ones. Fruits not flanged.