Roridomyces roridus, commonly known as the dripping bonnet or the slippery mycena, is a species of agaric fungus in the family Mycenaceae. It is whitish or dirty yellow in color, with a broad convex cap 5–15 mm (0.2–0.6 in) in diameter. The stipe is covered with a thick, slippery slime layer. This species can be bioluminescent, and is one of the several causative species of foxfire.
