- For the purposes of this category, "the Pacific" is defined in accordance with the World Geographical Scheme for Recording Plant Distributions (WGSRPD), in which it is considered one of the world's nine botanical continents. The WGSRPD further divides the Pacific into four botanical regions: Southwestern Pacific, South-Central Pacific, Northwestern Pacific, and North-Central Pacific.
- Taxa of the lowest rank are always included. Higher taxa are included only if endemic.