Derrumbe
Psilocybe caerulescens
Spanish: Derrumbe

Psilocybe caerulescens, also known as Landslide mushroom ("derrumbe" in Spanish), is a psilocybin mushroom having psilocybin and psilocin as main active compounds. Along with Psilocybe mexicana and Psilocybe aztecorum, it is one of the mushrooms likely to have been used by the Aztecs and is currently used by Mazatec shamans for its entheogenic properties.
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Cite as: “Derrumbe (Psilocybe caerulescens) at La Saladita”, La Saladita Field Guide, lasaladita.com/species/psilocybe-caerulescens/, updated 2026-09-26. Observation counts and months come from iNaturalist research-grade records within about 50 km of 17.8375°N, 101.7606°W (the survey box also takes in Zihuatanejo, Ixtapa and Troncones); summary text from Wikipedia where present.