Notes on Mucuna (Leguminosae: Papilionoideae) in Thailand: fruits of M. oligoplax re-assessed, and a revised key to species with lamellate fruits

Fruiting material of a Mucuna from Peninsular Thailand with distinctive lamellae proved to be conspecific with M. oligoplax, which was previously thought to have fruit almost lacking lamellae. A revised description and a distribution map for M. oligoplax are presented. This finding also necessitates revision of the key to Mucuna species from the Asian mainland with lamellate pods.