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).