Lactarius torminosus
Lactarius torminosus, commonly known as the woolly milkcap or the bearded milkcap, is a mushroom in the genus Lactarius. It is a common and widely distributed fungus, found in North Africa, northern Asia, Northern Europe, and North America. L. torminosus associates with various trees, most commonly birch, and the mushrooms grow on the ground singly or in groups in mixed forests.  Although it is valued for its peppery flavor and eaten after suitable preparation in Russia and Finland, it is highly irritating to the digestive system when eaten raw. The toxins responsible for the acrid taste are destroyed by cooking.