(1872) Coprinarius hiascens Quél.

(1886) Coprinus hiascens J.E.Lange (1938) Coprinellus hiascens Redhead, Vilgalys & Moncalvo (2001) Tulosesus hiascens is a species of mushroom producing fungus in the family Psathyrellaceae.

[1] It was first described as Agaricus hiascens by the Swedish mycologist Elias Magnus Fries in 1821.

[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 hiascens until 2020 when the German mycologists Dieter Wächter & Andreas Melzer reclassified many species in the Psathyrellaceae family based on phylogenetic analysis.