I suggest adding a few more tidbits of information to help roleplayers researching lore in the game:

Names

Matis names are much like latin names. With personal names like Liccio, Sergio, Lini, and Chiaro one might think they were in the Mediterranean rather than a world-sized tree. Family names also ring with a latin flavor; Chialdo, Chiacco, Antori, Lildo, and Sinia are a few examples.

Housing, crafting, and general lifestyle of the Matis may bring up visions of elves. Their height and fair skin contribute, and their attitude is very similar to haughty elves. They don't have pointy ears, nor are they highly inclined toward magic (though they are quite capable with it, as they are in all of their endeavors), but a definite elven flavor exists among them.