Coprinopsis acuminata

Coprinopsis acuminata, commonly known as the humpback inkcap mushroom and earlier as Coprinus acuminatus, is a coprophilous fungus that grows on herbivore dung. It is heterothallic.

Taxonomy
Coprinopsis acuminata was first described as Coprinus acuminatus in 1969 and later as Coprinopsis acuminata.