Th e satellite genus Sebertia (Sapotaceae, Chrysophylloideae) in New Caledonia is here recognized as Pycnandra subgenus Sebertia, a group comprising only two species. Pycnandra canaliculata is described and illustrated as new from the south part of Grande Terre where it occurs in maquis vegetation and humid forest on ultramafi c soils, often along watercourses. Th is species is well known among many biologists but misidentifi ed until now as Sebertia gatopensis, a synonym of P. blanchonii that resides in northwest Grande Terre. In New Caledonia, Pycnandra is the only sapotaceous genus with fl owers that lack staminodes and Pycnandra subgenus Sebertia is characterized by small white fl owers and fruits lacking stylar remnants. Th e fruits are characteristic with a scale-like epidermis that is translucent and peels off in P. acuminata versus brown and persistent in P. canaliculata. Using fi eld data and applying IUCN criteria, we assess the preliminary threat as Least Concern (LC) for P. acuminata and Vulnerable (VU) for P. canaliculata.