close-up of a woody fungus growing on the bark of a tree in a park in odessa

antennae bark basidiomycete biodiversity biota body bracket brown cap cellulose closeup conk decay decomposition ecology ecosystem forest fruiting fungus gills growing habitat hyphae interaction lignin mushroom mycelium mycology nature odessa organism parasitic park perennial saprobic saprotroph shelf spore spores sporocarp substrate symbiosis tree trutovik wood woody