oyster mushroom: edible agaric with a soft greyish cap growing in shelving masses on dead wood
agaric: a saprophytic fungus of the order Agaricales having an umbrellalike cap with gills on the underside
nipa palm: any creeping semiaquatic feather palm of the genus Nipa found in mangrove swamps and tidal estuaries; its sap is used for a liquor; leaves are used for thatch; fruit has edible seeds