https://en.wikipedia.org/wiki/Pleurotaceae Some bear an off-center stem, others are attached to their wood substrate without much if any stem. All species survive by decomposing wood and by infecting and absorbing nematodes. Some species of Pleurotus have been used in experiments conducted to detoxify human waste and oil spills. Many species in the genera Pleurotus, Hohenbuehelia are nematophagous, that is, they derive nutrition by consuming nematodes. This is made possible by hyphae that may have adhesive knobs that attach to passing nematodes and secrete nematotoxic compounds. Perhaps the best known member is the oyster mushroom, Pleurotus ostreatus.
Division: Basidiomycota Class: Agaricomycetes Order: Agaricales