Contributions to the fungal diversity of the Cerrado: new records of lignocellulolytic Agaricomycetes Author Regio, Nicolas do Carmo Laboratório de Micologia, Departamento de Botânica, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, nº 9.500, Prédio 43.432, Agronomia, CEP 91501 - 970, Porto Alegre, Rio Grande do Sul, Brazil. nicolas.regio@gmail.com Author Palacio, Melissa Laboratório de Micologia, Departamento de Botânica, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, nº 9.500, Prédio 43.432, Agronomia, CEP 91501 - 970, Porto Alegre, Rio Grande do Sul, Brazil. Author Westphalen, Mauro Carpes Laboratório de Micologia, Departamento de Botânica, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, nº 9.500, Prédio 43.432, Agronomia, CEP 91501 - 970, Porto Alegre, Rio Grande do Sul, Brazil. Author Feuerstein, Shirley Cunha Laboratório de Micologia, Departamento de Botânica, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, nº 9.500, Prédio 43.432, Agronomia, CEP 91501 - 970, Porto Alegre, Rio Grande do Sul, Brazil. Author Silveira, Rosa Mara Borges da Laboratório de Micologia, Departamento de Botânica, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, nº 9.500, Prédio 43.432, Agronomia, CEP 91501 - 970, Porto Alegre, Rio Grande do Sul, Brazil. text Iheringia, Série Botânica 2024 e 20241102 2023-10-11 79 1 16 journal article 10.21826/2446-82312024v79e20241102 2446-8231 Flavodon cf. flavus* (Klotzsch) Ryvarden, Norw. Jl Bot. 20(1):3 (1973) Description: Species recognizable because of its yellowish colored basidiome with poroid to hydnoid hymenophore and reddish reaction with KOH ( Ryvarden 2015 ). Our specimen was old and burnt due to wildfire, which occurs naturally in the Cerrado region. Nevertheless, we were able to identify the genus with the aid of microscopic traits, namely a dimitic hyphal system with simple-septate generative hyphae, and presence of metuloid cystidia ( Ryvarden 2015 ). However, the cystidia observed were mainly in the trama of the tubes, with some distinctly bent skeletal hyphae, and none with an apical incrustation or projecting in the hymenium, as described by Ryvarden. Therefore, we believe that more studies are necessary to understand the real delimitation of this so-called “tropical counterpart to the temperate-boreal genus Irpex s. str. ” ( Ryvarden 2015 ). Ecology & Distribution: Growing on deciduous wood, it presents a Pantropical distribution, from Florida to Brazil in the Neotropics ( Ryvarden 2015 ).Although it is known to occur in the Brazilian territory, we only found one citation for state of Amazonas ( Couceiro et al. 2017 ). First record of the genus Flavodon for the Cerrado region. Specimen examined: BRAZIL , TOCANTINS , Itaguatins, Fazenda Prof.ª Neusa, 5°45’07.8” S , 47°33’31.0” W , 26.IX.2018 , M. Palacio 377 (ICN202092).