Calomnion is a genus of mosses in the family Rhizogoniaceae. They have been reported from Australia, New Zealand, Polynesia, Melanesia, New Guinea, and eastern Indonesia.
The genus was originally placed within its own family, the Calomniaceae, with the genus Nadeaudia. Nadeudia contained one species, Nadeaudia schistostegiella, which is now considered a synonym for Calomnion schistostegiellum.
Species included in the genus are:
^ Bell, N., Quandt, D., O'Brien, T., & Newton, A. (2007). Taxonomy and Phylogeny in the Earliest Diverging Pleurocarps: Square Holes and Bifurcating Pegs. The Bryologist, 110(3), 533-560. Retrieved from https://www.jstor.org/stable/20110887
^ Vitt, D. H. 1991. A new species of Calomnion (Bryopsida) from Lord Howe Island. Novon 1: 53–55.
^ Vitt, D. H. 1995. The genus Calomnion (Bryopsida): taxonomy, phylogeny, and biogeography. Bryologist 98: 338–358.
^ The Plant List