My dad was quite into collecting wild fungi and we ate quite a lot of them and had a number of field guides around the house. My memory is that "edible" was res

My dad was quite into collecting wild fungi and we ate quite a lot of them and had a number of field guides around the house. My memory is that "edible" was reserved (quite sensibly) for varieties that could be eaten in quantity with no special preparation with no known ill effects. Poisonous was not the only other category, there was inedible for not known to be harmful but not considered pleasant to eat, deadly poisonous for the really scary stuff and then sometimes more details on varieties that had some reported ill effects, required special preparation, etc. some of which could be eaten safely, at least by some people, but were not listed simply as edible.