Distichium is a genus of haplolepideous mosses (Dicranidae) in the monotypic family Distichiaceae.

[1][2] The genus Distichium has traditionally been considered part of family Ditrichaceae.

[3] However, phylogenetic analyses have found Ditrichaceae to be polyphyletic and Distichium part of a protohaplolepidous grade of early branching lineages in Dicranidae.

[2][4] Based on these studies Distichium was restored to Distichiaceae, where it was originally placed by Schimper (1860).

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