Galerina

Galerina is a genus of small brown-spore saprobic mushroom-bearing fungi, with over 300 species found throughout the world. Galerina mushrooms are typically small and hygrophanous, with a slender and brittle stem. They are often found growing on wood, and when on the ground have a preference for mossy habitats. The genus is noted for some extremely poisonous species which are occasionally confused with hallucinogenic species of Psilocybe or with edible species. Prior to 1909, the genus was known as Galera, however, this was an invalid name due to the name being used earlier for a genus of orchids. In 1909, Franklin Sumner Earle renamed the genus under a valid name, Galerina....read more on Wikipedia.