Comment by homerowilson
14 hours ago
"one mushroom species in five is poisonous"? 20% ??? That seems like a crazy high estimate to me, at least if you mean deadly poisonous to humans. In the USA there are only a few species of amanita, galerina, a few of the hundreds of species of cortinarius, maybe some gyromitra and a handful of others I can think of that will kill you. Among the many thousands of mushroom species in the USA, there are only a few dozen known deadly poisonous ones. It's a really tiny percentage. Of course that doesn't mean that the others are edible, just not gonna kill you...
Seems clear to me that poisonous != deadly poisonous by GPs - as they stated, many of the poisonous mushrooms have mild side effects, like “makes a hangover worse.” So 20% is definitely high for deadly poisonous, but not for inedible/mildly poisonous.