Bioluminescence is hard at work again. This time it is fungi inside of decaying trees. These glowing mushrooms emit green light in the forests during the night. It has a double purpose. First, it attracts insects and they make spreading spores easier. Second, it warns potential mushroom eaters to not touch it. Their light is sickly green and sometimes so bright you can read a book next to them. It is the result of a special oxidative enzyme, called luciferase. The fox in their names could be Old French for "false" but it can just as well simply mean "fox".