I read they grow in Europe, but Europe is huge, cannot say yet for sure if they grow in my area xD I live close (50km) to Gerês, a beautiful national park (the only one in portugal) with an huge wood (some areas open access, others only with authorization). There grows a lot of mushrooms from Cantharellus. Next to my home never found many from that family, so if Tubaeformis exist in portugal, is there I'll mostly find them someday :) We'll be alert :)