In: Sydowia 79, (2027): 187-198; ISSN 0082-0598, DOI 10.12905/0380.sydowia79-2027-0187, Published online on August 19th, 2026

Phylloporia citripora, sp. nov., (Hymenochaetaceae, Basidiomycota): a new species from the Brazilian Amazon

Paulo Fernando Melo dos Santos, Richard Bruno Mendes-Freire & Adriene Mayra da Silva Soares

1 Laboratório de Botânica/Micologia, Universidade Federal Rural da Amazônia, Campus Tomé-Açu, Rodovia PA-451, Km 03, Tomé-Açu, 68680-000, Pará, Brazil
2 Programa de Pós-graduação em Biologia de Fungos, Algas e Plantas, Universidade Federal de Santa Catarina, Campus Universitário Trindade, Florianópolis, 88040-900, Santa Catarina, Brazil
3 Programa de Pós-graduação em Ciências Biológicas - Botânica Tropical (PPGBot), Coordenação de Botânica, Laboratório de Micologia, Museu Paraense Emílio Goeldi/Universidade Federal Rural da Amazônia, Avenida Perimetral 1901, Terra Firme, 66077-530, Belém, Pará, Brazil.
* e-mail: adriene.soares@ufra.edu.br

Melo-Santos P.F., Mendes-Freire R.B. & Soares A.M.S. (2026) Phylloporia citripora, sp. nov., (Hymenochaetaceae, Basidiomycota): a new species from the Brazilian Amazon. – Sydowia 79: 187–198.

Phylloporia citripora, sp. nov., (Hymenochaetaceae, Basidiomycota) is described from the Brazilian Amazon based on morphological and molecular analyses (ITS+LSU sequences). The species was found parasitizing the roots of an unidentified living angiosperm tree and is characterized by annual, pileate basidiomata, with a light-green hymenial surface when fresh, dissepiment thick (almost equal to pore diameter), a dimitic hyphal system, and oblong-ellipsoid to cylindrical basidiospores measuring 2.9–4.6 × 1.8–2.8 µm. Phylogenetic analyses using Maximum Likelihood and Bayesian Inference positioned Phylloporia citripora as a new species for the Brazilian Amazon. This is the first species of the genus Phylloporia recorded from an area of sustainable mining and expands the known diversity of Hymenochaetaceae in this region.

Keywords: Amazon rain forest, Agaricomycetes, Hymenochaetales, molecular analyses, taxonomy. – 1 new species.