We document 388 of the 751 species Kew’s World Checklist records as native to Iceland. Native means native: introduced, extinct and doubtful records are excluded, so this is where these plants are from, not everywhere they now grow.
Kew records 363 more species as native to Iceland that we do not document. They are real, accepted plants. They have no page here because we could not find three photographs of them licensed for commercial use, and this site publishes no species it cannot show you. That gap is the honest measure of what we are missing, and it is why we print both numbers rather than the flattering one.
This is a checklist of what is native, not a guide to what will grow in your garden, and it carries no care advice and no toxicity claim, because we do not have those from a source we can cite.