Papuasia is a Level 2 botanical region defined in the World Geographical Scheme for Recording Plant Distributions (WGSRPD). It lies in the Southwest Pacific Ocean, in the Melanesia ecoregion of Oceania and Tropical Asia.
It comprises the following political entities:
- Brummitt, R.K. (2001). World Geographical Scheme for Recording Plant Distributions: Edition 2 (PDF). International Working Group on Taxonomic Databases For Plant Sciences (TDWG). Retrieved 2006-11-27.
- "The Papuasian region". User Documentation for ANHSIR. Australian National Herbarium. Retrieved 1 May 2014.