A preliminary annotated checklist of Ophiorrhiza (Ophiorrhizeae, Rubioideae, Rubiaceae) in New Guinea.

Thirty-two New Guinea Ophiorrhiza names are recognised here, presented in alphabetical order with notes on typification based on the literature and preliminary herbarium observations. Lectotypes are selected for 20 Ophiorrhiza names and 13 Ophiorrhiza names are considered incertae sedis due to missing type material or general lack of information.