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Issue: Vol. 741 No. 3: 17 Feb. 2026
Type: Article
Published: 2026-02-17
DOI: 10.11646/phytotaxa.741.3.1
Page range: 233-254
Abstract views: 60
PDF downloaded: 0

Updated data on Psilocybe (Hymenogastraceae, Agaricales) from the southern Brazil region and a newly proposed species

Departamento de Botânica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, CP 91501–970, Porto Alegre, RS, Brazil
SECIHTI-Universidad de Guadalajara, Apdo. Postal 1–139, Zapopan, Jal., 45147, Mexico
Biology Department, Clark University, Worcester, MA 01610, USA
Natural History Museum of Utah & School of Biological Sciences, University of Utah, 301 Wakara Way, Salt Lake City UT 84108, USA
Departamento de Botánica y Zoología, Universidad de Guadalajara, Apdo. Postal 1–139, Zapopan, Jal., 45147, Mexico
Departamento de Biología Celular y Molecular, Universidad de Guadalajara, Apdo. Postal 39–82, Zapopan, Jal. 45110, Mexico
Departamento de Botânica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, CP 91501–970, Porto Alegre, RS, Brazil
Diversity Neotropical Funga phylogeny Psilocybe araucariicola rDNA ITS rpb2 tef1 sequences Fungi

Abstract

Psilocybe is a well-known genus of fungi, commonly referred to as “magic mushrooms”, due to its production of psychoactive compounds. Research interest in this genus has experienced a resurgence due to its relevance as a potential therapy for a growing global mental health crisis. In this study, 62 specimens representing 10 species of Psilocybe from southern Brazil were examined using morphological data and rDNA ITS sequences in some of them. Here, we report new records of P. subaeruginascens and P. yungensis, providing new information about the occurrence and range of these species. In addition, a novel species from southern Brazil, Psilocybe araucariicola, is characterized and introduced using morphological characteristics and DNA sequencing. Phylogenetic analyses using rDNA ITS, rpb2, and tef1 sequences were performed to determine the relationship of P. araucariicola to other species within Psilocybe. Morphological description, illustrations, photographs, and phylogenetic analysis results of P. araucariicola are provided.

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How to Cite

Silva, P.S.D., Ramírez-Cruz, V., Bradshaw, A.J., Dentinger, B.T., Guzmán-Dávalos, L., Villalobos-Arámbula, A.R. & Silveira, R.M.B.D. (2026) Updated data on Psilocybe (Hymenogastraceae, Agaricales) from the southern Brazil region and a newly proposed species. Phytotaxa 741 (3): 233–254. https://doi.org/10.11646/phytotaxa.741.3.1