Locality: Samoan Archipelago (-14.316880, -170.761250)

Abstract: This category includes about 40 species that are endemic to the Samoan archipelago. The rate of endemism of native species in Samoa is about 31%, and there is a correlation between the rate of endemism and elevation: montane and cloud forest species have the highest rates in Samoa, while species on the seashore (i.e., littoral species) have the lowest rate (0% in Samoa). The data for high elevation species may be somewhat skewed because there is a correlation between the number of specimens collected per species and elevation of the species, because plant collecting at higher elevations is more difficult and has consequently been less frequently done. Hence, a species may be rarely collected, but may be occasional in its montane forest habitat, where it is relatively safe from habitat destruction. The main threat to rare endemic species is habitat destruction.

Notes: Scientific names have been updated to follow the APG IV system of flowering plant classification.