Shaggy Ink Cap
Coprinus comatus, the Shaggy Ink Cap, is a common fungus often seen growing on lawns, along gravel roads and waste areas. The young fruiting bodies first appear as white cylinders emerging from the ground, then the bell-shaped caps open out. The caps are white, and covered with scales - this is the origin of the common names of the fungus. The gills beneath the cap are white, then pink, then turn black and secrete a black liquid filled with spores (hence the “ink cap” name). This mushroom is unusual because it will turn black and dissolve itself in a matter of hours after being picked or depositing spores.
When young it is an excellent edible mushroom provided that it is eaten soon after being collected (it keeps very badly because of the auto digestion of its gills and cap). The species is cultivated in China as food. It grows in groups in places which are often unexpected, such as green areas in towns. It occurs widely in grasslands and meadows in Europe and North America. It appears to have been introduced to Australia, New Zealand and Iceland.
Source: en.wikipedia.org/wiki/Coprinus_comatus - 25.06.2010
Shaggy Ink Caps
It is astonishing, that white mushrooms may dissolve themselves in black „ink“!