The rainy season has started and the mushrooms will come out in larger amounts.
Here a picture of a piece of white rotten wood, eaten up by a mushroom that separates it from it's cellulose which makes it to turn into white dusty substance, a conditon required to transform wood into paper in the ancient times.
Today's paperindustry, for sure, do not wait for mushrooms to do this, they wash the wood-dust they made with a chemical called Mercapton to bleach it.
Other mushrooms do the oposite and eat up lignin components which leaves it turn red chip-like particles. We call that than a red rotten wood.
This picture is part of my Makro-Gallery http://www.pbase.com/lou_giroud/makrophotography