Horak, E. (1987), Tetrapyrgos Horak. (nom. et gen. nov.) replacing Pterospora Métrod (1949: nom. preocc.). Sydowia 39: - [tax. nov.]

Honan, A.H., Desjardin, D.E., Perry, B.A., Horak, E. & Baroni, T.J. (20 October 2015), Towards a better understanding of Tetrapyrgos (Basidiomycota, Agaricales): new species, type studies, and phylogenetic inferences. Phytotaxa 231(2): - [secondary reference]

AusFungi (2019), AusFungi 21 Jan. 2019: - FungI [secondary reference]

AusFungi (2020), AusFungi: - [secondary reference]

• Comment: Campanella olivaceonigra is now accepted in Tetrapyrgos following Honan et al. (2015).

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