Coprinus plagioporus Romagn (1941) Coprinellus plagioporus Redhead, Vilgalys & Moncalvo (2001) Tulosesus plagioporus is a species of mushroom producing fungus in the family Psathyrellaceae.

[1] It was first described as Coprinus plagioporus by the mycologist Henri Romagnesi in 1941.

[2] In 2001 a phylogenetic study resulted in a major reorganization and reshuffling of that genus and this species was transferred to Coprinellus.

[3] The species was known as Coprinellus plagioporus until 2020 when the German mycologists Dieter Wächter & Andreas Melzer reclassified many species in the Psathyrellaceae family based on phylogenetic analysis.

This Psathyrellaceae article is a stub.