sprouting from dead tree trunk the white bracket fan-d fungi

agaricales agaricomycetes background bark basidiomycota boletus bracket clitocybe crab ecology environment flora fungi fungoid fungus funnel giganteus grow growth hymenochaetaceae laetiporus lentinus leucopaxillus moss mycoremediation nature ostreatus outdoor oyster parasite pleurotus polypore polyporus portentosus rot saprobic saprophyte shelf spore squamosus stump the toadstool tree tricholomataceae trunk white wild willow wood woodcap woods