The Encyclopedia of Psychoactive Plants: Ethnopharmacology and Its Applications

Galerina steglichii Besl


Steglich’s Galerina






This tiny mushroom, which suddenly appeared in Regensburg, Germany, in 1993, develops a bluish color when pressed or squeezed. An extract of the mushroom was found to contain psilocybin, psilocin, and baeocystin. This was the first discovery of these psychoactive alkaloids in a species of the genus Galerina (Besl 1993). The dried fruiting bodies contain 0.21 to 0.51% psilocybin, 0.02 to 0.07% baeocystin, and 0.08 to

0.21% psilocin (Gartz 1995, 304). This species is relatively easy to cultivate on an agar substrate.

Beware! Many other species of the genus Galerina are very poisonous and may be lethal.

“The genus Galerina contains dangerously poisonous mushrooms in which the same deadly amatoxins are present as in the death cap [Amanita phalloides (Vaill.) Secr.]. These toxins manifest their effects after a latency period of 12 hours and are typically lethal in spite of therapy. Galerina autumnalis (Peck) Singer et Smith is a common North American species that, like some Psilocybe species, grows on remnants of wood in parks and forests. At first glance, it is very similar to Psilocybe stuntzii Guzman et Ott and can grow directly next to this. But the Galerina species do not blue.”






Besl, H. 1993. Galerina steglichii spec. nov., ein halluzinogener Häubling. Zeitschrift für Mykologie 59:215–18.


Gartz, Jochen. 1995. Cultivation and analysis of Psilocybe species and an investigation of Galerina steglichiiAnnali dei Musei Civici di Rovereto 10 (1994): 297–305.