tricholoma pardinum: a poisonous agaric having a pale cap with fine grey fibrils
agaric: a saprophytic fungus of the order Agaricales having an umbrellalike cap with gills on the underside
rhenium: a rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum