HypopterygiaceaeThe Hypopterygiaceae are a family of mainly tropical mosses of the order Hypopterygiales, a sister-group to the Hookeriales and Hypnales.It contains eight genera.Arbusculohypopterygium Canalohypopterygium Catharomnion Cyathophorum Dendrocyathophorum Dendrohypopterygium Hypopterygium ''Lopidium''