Glow-in-the-dark mushrooms in Borneo. Photo by Rhett A. Butler
Glowing fungi are found in tropical forests around the world. They are common enough that their bioluminescence has a term: foxfire.
This particular mushroom, found along the Kinabatangan in the state of Sabah in Malaysian Borneo, is likely a species of Mycena, more than 30 types of which are known to be bioluminescent.