A total of 945 spezimens of fungi were studied with regard to their distribution on ditterent substrates, abundances and economic importance. The samples came from the collection ot the Wood Pathology Laboratory of CPPF/INPA in Manaus, Brazil. Altogether, 163 spezies and 87 genera were identified. The following genera Trametes, Auricularia, Panus, Rigidoporus and Hymenochaete were represently by more than 5 species. Auricularia delicata ((Hook.) Underw., Auricularia fuscosuccinea (Mont.) Farl., Coriolopsis occidentalis (Klotz.) Culln., Favolus brasiliensis Fr., Fomes faciatus (Sw.: Fr.) Cke., Hexagona hydnoides (Fr.) K. Fidalgo, Panus rudis Fr., Phellinus gilvus (Schw.) Pat., Pleurotus spp, Rigidoporus lineatus (Pers.) Ryv., Schizophyllum commune Fr. and Schizopora carneo-lutea (Rodw. & Clel.) Kotl. & Pouz., were found on all stubstrates. Kretzschmaria clavus Fr. Sacc., Pachykytospora alabamae (Berk. & Cke.) Ryv., Polyporus infernalis Berk., Stereum fasciatus Schw., and Xylaria telfairii (Berk.) Fr., occurred on naturally fallen trees. The well known parasites as Grammothele fuligo (Berk. & Br.) Ryv., Hypoderma capitatum Erikss. & Hjorst., Phellinus robiniae Murr., Rigidoporus microporus (Fr.) Overeem and Schizopora carneo-lutea were found on several substrates. The most common species was collected on naturally fallen trees and cut logs.

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