Abstract
The James Bay region is floristically little known. In this paper, we substantially expand and revise the flora of the largest of the James Bay islands: Akimiski Island, Nunavut Territory. We have added 73 taxa in 32 families, for a total of 273 native taxa and 5 exotics. In addition, we have updated taxonomy and have provided information on rarity. A large fraction of the plants on Akimiski are classed as uncommon or rare in Ontario; in many cases, these represent either coastal species, or species near their geographic range limits. Some may be threatened by climate change and habitat degradation.