. . "Oyster mushroom" . . . . . . "grey oysters" . . "Pleurotus ostreatus" . . "neutari" . "Pleurotus ostreatus" . . . . . . . "Pearl oyster mushroom" . . "oyster mushroom" . "oyster mushrooms" . . . "''Pleurotus ostreatus'' var ''columbinus''" . . "P. ostreatus" . "oyster" .