Well, I just googled and read a little more than I wanted to know about psilocybin 'shrooms.
Apparently, some people with cluster headaches, vascular headaches and migraines are now swearing by psilocybin and LSD treatments, lol. The 'shrooms are legal in Amsterdam and for medicinal purposes, some places in the UK.
I don't know if that includes the British Virgin Islands, where they have a mushroom tea party at one bar every full moon. It's illegal to sell the tea, so they give it away. I've heard about tourists falling down the hillsides behind Bomba's Shack while going out looking for more 'shrooms there.
Anyway, because of all this interest, there are now mail-order growing and indoor cultivation kits available, so no messy cow-tipping to get at them. Sales and possession of the psilocybin spores themselves are not illegal, *according* to the websites.