Rare or little known corticioid basidiomycetes from southern Belarus

Six non-poroid resupinate homobasidiomycete species, collected within the borders of Paleskaya Physiographic Province, or Polesia (Belarus), are described and illustrated: Crustodontia chrysocreas, Hyphoderma cryptocallimon, H. transiens, Oliveonia citrispora, Trechispora caucasica, T. minuta. According to the known distributional data, these taxa are rare or exceptionally rare in Belarus and other European countries; they are, except H. transiens, reported from Belarus for the first time. Distinctive characters and morphological differences from similar-looking species are discussed.