postia rennyi - a thin layer of white fungus on the trunk of an old cherry, destroying the wood, ukraine

postia rennyi basidiomycota basidiomycetes polyporales fomitopsidaceae agaricomycetes fungi dikarya polyporaceae wood decay fungus cherry tree trunk spores mycology habitat decomposition hyphae colony white thin growth nature biology europe ukraine species genus fungal environment forest ecological organism branch ecology biodiversity mushrooms microbe phytopathology saprotroph ecosystem woody substrate mycelium infestation