A Trend Hunter article dated October 2006, reported about the discovery of Bioluminescent Fungi found in São Paulo, Brazil—since then, more have been discovered!
On August 15, 2008 the National Science Foundation wrote an article, A Thousand Points of Light: Bioluminescent Fungi , in which new photos, taken by a team of mycologists, of bioluminescent mushrooms are shown.
As you can see, the difference between photos taken during the day and night are drastic. During the day, the mushrooms look bland, whereas at night, they become a fantastic green neon light. The first set shown is Mycena lucentipes and the second Mycena luxaeterna.
Photo Credit: Cassius V. Stevani, Institute of Chemistry, University of São Paulo