Template:Guzmán, 1979

• Guzmán, G. 1979. Observations on the evolution of Psilocybe and description of four new hallucinogenic species from Mexican tropical forests. Beihefte zur Nova Hedwigia 8: 168-181. full article Zobodat (PDF).  
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New names (4)

• Psilocybe naematoliformis
• Psilocybe singeri
• Psilocybe weldenii
• Psilocybe uxpanapensis