overgrown colonies of mold fungi ascomycetes on rotten organic matter in the odessa catacombs

humid organic remains rotten wood colonies catacombs odessa microscopy spore microbiology moving mushrooms myxobacteria fruit body slime mould microscopic creep plasmodium life cycle organism grow crawl bacteria myxomycete tree colony ascomycota aspergillum aspergillus construction dampness decompose fungal mold fungi fungus humidity mycelia mycelium mycorrhizal myxomycetes myxomycota nature rot shell rock stone mining water wet residues