Coprinus, or Shaggy Ink Cap is easily recognizable from its cap which initially covers almost the whole of its stem. Entirely white to begin with, the cap becomes shaggy as separating scales develop. The gills change rapidly from white to pink, then to black. It grows in groups in places which are often unexpected, such as green areas in towns. When young it is an excellent edible mushroom provided that it is eaten soon after being collected (it keeps very badly).

It is one of few mushrooms which contains vitamin C, it also contains niacin, riboflavin and thiamine. Its protein contains vital aminoacids. It is high in potassium, but poor in sodium (130:1); and includes magnesium, iron, calcium, mangane, zinc and copper.
In traditional medicine it is considered beneficial for digestion and the treatment of hemorrhoids.
In the latest research, it has been shown to have considerable blood sugar reducing effects; and Chinese scientists have proven that it is also able to inhibit sarcoma cell growth.