Synonymy:
Agaricus acuminatus Schaeff., Fung. bavar. palat. nasc. (Ratisbonae) 4: 44 (1774)
Coprinarius acuminatus P. Kumm., Führ. Pilzk. (Zerbst): 69 (1871)

Agaricus carbonarius Batsch, Elench. fung. (Halle): 69, tab. 2, fig. 6 (1783)
Panaeolus carbonarius (Batsch) Morgan, J. Mycol. 13(2): 61 (1907)
Chalymmota carbonaria (Batsch) Cout., Bolm Soc. broteriana, Coimbra, sér. 2 7: 340 (1932) [1931]

Agaricus carbonarius var. rhagadiosus Fr., Observ. mycol. (Havniae) 2: 34 (1818)

Chalymmota carbonaria var. minuta-sculpta Cout. [as 'minute-sculpta'], Bolm Soc. broteriana, Coimbra, sér. 2 7: 340 (1932) [1931]

Panaeolus acuminatus f. gracilis V.E. Tyler & A.H. Sm., Biochemie und Physiologie der Alkaloide 21: 47 (1963)

Panaeolus acuminatus var. cephalocystis E. Ludw., Pilzkompendium (Eching) 1([2]): 492 (2001)

Panaeolus acuminatus var. quercicola Contu & Hauskn., Österr. Z. Pilzk. 12: 85 (2003)

Position in classification:
Panaeolus, Galeropsidaceae, Agaricales, Agaricomycetidae, Agaricomycetes, Basidiomycota, Fungi

Note:
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