It it worse than not being an expert on local mushrooms. You can get fooled because you can find mushrooms that resembles mushroom from you home region, that you know to be edible.

E.g: https://en.wikipedia.org/wiki/Volvopluteus_gloiocephalus#Edi... == In the United States, there have been several cases of Asian immigrants collecting and eating death caps (Amanita phalloides), under the mistaken assumption that they were Volvariella. ==

That has also happened here in Denmark.