^ i'm not surprised there was localised knowledge of psilocybe species in various parts of the states, but i imagine that knowledge was shared specifically amongst underground groups?
it would certainly be less difficult to identify cubensis and the like, which are fairly distinctive, as opposed to other mushrooms that may have several inactive or unsafe lookalikes.
what is amazing to me is proliferation of native psilocybe species across the globe, yet the relatively recent understandings of them amongst "mycophobic" peoples.
even up to the mid to late 90s, reliable identification guides were hard to come by for a lot of people, so the information age has been of enormous benefit for those of us that take an interest in these fungi - in terms of cultivation and picking knowledge.
cheers!