Key for Naucleopsis Miq.

1	Periderm of branchlets peeling of. Naucleopsis amara
1'	Periderm of branchlets persistent off. 2
2	Petiole 2-4 mm thick, broadly canaliculate above. Naucleopsis glabra
2'	Petiole 1-1.5 mm thick, narrowly canaliculate above. Naucleopsis guianensis