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In order to provide data on polypore identification and their taxonomy, survey studies were undertaken in tree biotope of polypore occurrence. The main objective of this study was to provide a scientific database on the diversity of phytopathogenic polypore and interactions with the host plants in their biotope. Transects of 1 km length covering a width of 50 m were selected at each site. Basidiomes were collected along the transects from roots, trunks and/or branches of forest species Sixty-three species of polypore were identified on twenty-three species of host plants belonging to eleven families. The families most prone to polypore infection were Fabaceae, Apocynaceae, Combretaceae, Anacardiaceae and Caesalpiniaceae. These phytopathogenic polypore were annual to perennial. They grow on roots, trunks and branches of trees and shrubs causing crown and root rots, and trunk cankers on the host plants. The genus Phellinus was the most represented in the agrosystems and in the classified forest of Kou. Similarly, the terricolous species represented by the genera Ganoderma, Amauroderma and Laetiporus were found mainly in the classified forest of Niangoloko and gallery forests of Dan.