Often called the liberty cap, this type of mushroom yields the hallucinogenic substances baeocystin and psilocybin. There are three different kinds of Liberty hats in the Netherlands, which many people are unaware of. The most well-known Liberty cap mushroom is the prickly Psilocybe semilanceata. Purchase Liberty caps. The eastern region of the nation is home to these. Nearly all information This kind of information regarding liberty caps on the Internet.