Trichaptum perrottetii (Lév.) Ryvarden, Norw. Jl Bot. 19:237 (1972)

Remarks: This species is microscopically similar to T. byssogenum, but the dense mat of stiff black hairs on its pileus and a violet to brown hymenophore distinguishes it from the latter (Ryvarden 2016). Another morphologically similar species is Hexagonia hydnoides, but the apically encrusted cystidia present in T. perrottetii distinguish it from the former.

Ecology & Distribution: Growing on deciduous wood. It is a Neotropical species, known from Florida to northern Argentina (Ryvarden 2016). In Brazil, it is recorded for the states of Acre, Amapá, Amazonas, Bahia, Ceará, Goiás, Mato Grosso, Mato Grosso do Sul, Pará, Paraíba, Paraná, Rondônia, Roraima and São Paulo (Flora do Brasil 2020). New record for Tocantins.

Specimen Examined: BRAZIL, TOCANTINS, Itaguatins, Fazenda Prof.ª Neusa, 5°44’45.1” S, 47°33’46.4” W, 26.IX.2018, M. Palacio 369 (ICN202084). 5°44’47.2” S, 47°33’45.3” W, 26.IX.2018, M. Palacio 372 (ICN202087).