phellinus robustus - saprophytic wood fungus on an old oak tree stump in a garden, ukraine

phellinus saprophyte fungus oak stump wood decay mycelium brownrot tree basidiomycete polypore hyphae decomposer hardwood biodiversity ecosystem sporocarp spore cellulose cap pore perennial habitat substrate decomposition saprotroph mycology fungal decayresistant rot trunk basidiospores lignicolous bracketfungus resilience woodland nutrientcycle soil hymenochaetaceae agaricomycetes hymenochaetales fomitiporia robusta robustus phaeolus saprophytic old garden ukraine ukraine