Updated data on Psilocybe (Hymenogastraceae, Agaricales) from the southern Brazil region and a newly proposed species
Phytotaxa February 16, 2026 Paula Santos da Silva, Virginia Ramírez-Cruz, Alexander J. Bradshaw et al.
Psilocybe, the genus of fungi known as 'magic mushrooms' that produce psychoactive compounds, is the focus of renewed research interest because of its potential as a therapy for the global mental health crisis. Examining 62 specimens representing 10 species from southern Brazil using morphological data and DNA sequences, this work reports new records of P. subaeruginascens and P. yungensis, expanding knowledge of their occurrence and geographic range. A novel species, Psilocybe araucariicola, is introduced and characterized through morphology and DNA sequencing. Phylogenetic analyses with rDNA ITS, rpb2, and tef1 sequences clarify its relationship to other Psilocybe species.