Coprinellus

Coprinellus is a genus of mushroom-forming fungi in the family Psathyrellaceae. The genus was circumscribed by Petter Karsten in 1879. Most Coprinellus species were transferred from the once large genus Coprinus. Molecular studies published in 2001 redistributed Coprinus species to Psathyrella, or the segregate genera Coprinopsis and Coprinellus. As of April 2019, Index Fungorum accepts 66 species of Coprinellus. As of April 2019, Index Fungorum accepts 66 species of Coprinellus. Many of these species appear similar and require microscopic analysis to differentiate and identify.