...Hm. I'd think there would have to be some sort of resource like that. Even the most primitive bands of people have some sort of compendium, tome, or at least a shaman who knows what's good for you and what isn't.

Stuff here might not be as advanced as it is back where I'm from, but the islands here are all pretty autonomous from one another. At least one of them has to have something like that.

On the off chance something like that doesn't yet exist, someone could probably make a name for themselves by cataloging what's on all the varied islands.