Results show a distinct microflora for each forest type. A total of 9 families, 45 genera and 67 species were distributed among the two forest ecosystems were studied. Antrodiella, Auricularia, Grammothele, Steccherinum, Stereum and Trametes were found only in the native forest, where Antrodiella hydrophila (Berk. & Curt.) Ryv., Grammothele sp, Phellinus gilvus (Schw.) Pat., Rigidoporus microporus (Fr.) Overeem, Schizopora flavipora (Cke.) Ryv. and Trametes versicolor (Fr.) Pilat. were the most frequent species. Logs associated with Dentipellis dissita (Berk. & Cke.) Mass., Hydnochaete badia Bres., Lentinus calyx (Speg.) Pegler, Lentinus nigroosseus Pilat., Phellinus gilvus (Schw.) Pat., Rigidoporus lineatus (Pers.) Ryv., Steccherinum reniforme (Berk. & Curt.) Banker., Tomentella pallida (Rick) Penteado, Trametes versicolor (Fr.) Pilat., showed rapid decay during the sampling period. The Pinus elliottii plantation demonstrated specificity for Cladoderris dendritica Pers., Skvortzovia furfurella (Bres.) Bononi & Hjortst. The majority of the logs in this type of forest yielded Scytinostroma basidiocarps. Cladoderris and Scytinostroma formed basidiocarps over the entire log. Logs with Hypochnicium punctulatum (Cke.) Erikss., H. Sphaerosporum (Hohn. & Litsch.) Erikss., Scytinostroma aff. galactinum (Fr.) Donk, Scytinostroma sp1, Scytinostroma sp2, Skvortzovia furfurella (Bres.) Bononi & Hjortst., Trechispora cohaereuns (Schw.) Julich. & Stalp., and Trechispora sp had apparently a higher rate of decay than others. Antrodiella hydrophila (Berk. & Curt.) Ryv., Hypochnicium sphaerosporum (Hohn. & Litch.) Erikss., Hymenochaete aff. dura (Berk. & Curt.), Lentinus calyx (Speg.) Pegler, Pachykytospora alabamae (Berg. & Cke.) Ryv., Porodisculus pendulus (Schw.) Murr., Schizopora flavipora (Cke.) Ryv., Scytinostroma aff. galactinum (Fr.) Donk and Trechispora cohaereuns (Schw.) Julich & Stalp., are reported for the first time in Brazil.

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