# Hypnaceae

Hypnaceae is a large family of moss with broad worldwide occurrence in the class Bryopsida, subclass Bryidae and order Hypnales. Genera include Hypnum, Phyllodon, and Taxiphyllum.

## Ecology

Some of the family species occur on the floor of Canadian boreal forests; an example of this occurrence is within the black spruce/feathermoss climax forest, often having moderately dense canopy and featuring a forest floor of feathermosses including, Hylocomium splendens, Pleurozium schreberi and Ptilium crista-castrensis.

## Classification

The family Hypanaceae includes the following genera:
* Acritodon H. Rob.
* Austrohondaella Z.Iwats., H.P.Ramsay & Fife
* Bryosedgwickia Tosco & Piovano
* Chryso-hypnum Hampe
* Crepidophyllum Herzog
* Ctenidiadelphus M. Fleisch.
* Cyathothecium Dixon
* Dacryophyllum Ireland
* Ectropotheciella M. Fleisch.
* Ectropotheciopsis (Broth.) M. Fleisch.
* Ectropothecium Mitt.
* Elharveya H.A. Crum
* Elmeriobryum Broth.
* Entodontella Broth. ex M. Fleisch.
* Eurohypnum Ando
* Foreauella Dixon & P. de la Varde
* Glossadelphus M. Fleisch.
* Gollania Broth.
* Hypnum Hedw.
* Irelandia W. R. Buck
* Karstia B.H. Allen
* Leiodontium Broth.
* Leptoischyrodon Dixon
* Macrothamniella M. Fleisch.
* Mahua W.R. Buck
* Microctenidium M. Fleisch.
* Microthamnium A. Jaeger
* Mittenothamnium Henn.
* Nanothecium Dixon & P. de la Varde
* Neoptychophyllum S. He
* Plagiotheciopsis Broth.
* Platygyriella Cardot
* Podperaea Z. Iwats. & Glime
* Pseudohypnella (Broth.) M. Fleisch.
* Rhacopilopsis Renauld & Cardot
* Rhizohypnella M. Fleisch.
* Sclerohypnum Dixon
* Stenotheciopsis Broth.
* Stereodontopsis R. S. Williams
* Syringothecium Mitt.
* Taxiphyllopsis Higuchi & Deguchi
* Vesicularia (Müll. Hal.) Müll. Hal.
* Wijkiella Bizot & Lewinsky

### Formerly included

* Acosta (Schwägr.) Müll. Hal. – synonym of Sematophyllum
* Allorgea (Mont.) Ando – synonym of Andoa
* Andoa Ochyra – now in Myuriaceae
* Breidleria Loeske – synonym of Stereodon
* Bryocrumia L. E. Anderson – now in Symphyodontaceae
* Buckiella Ireland – synonym of Plagiothecium
* Callicladium H. Crum – now in Callicladiaceae
* Campylophyllum (Schimp.) M. Fleisch. – now in Amblystegiaceae
* Caribaeohypnum Ando & Higuchi – now in Taxiphyllaceae
* Ctenidium (Schimp.) Mitt. – now in Myuriaceae
* Cupressina (Mitt.) Müll. Hal. – synonym of Hypnum
* Dolichotheca (Broth.) Broth. – synonym of Herzogiella
* Drepanium G. Roth – now in Amblystegiaceae
* Filibryum W. Kim & T. Yamag. – now in Taxiphyllaceae
* Giraldiella Müll. Hal. – synonym of Pylaisia
* Herzogiella Broth. – now in Plagiotheciaceae
* Homomallium (Schimp.) Loeske – now in Pylaisiaceae
* Hondaella Dixon & Sakurai – now in Taxiphyllaceae
* Hyocomium Bruch & Schimp. – now in Myuriaceae
* Isopterygium Mitt. – now in Pylaisiadelphaceae
* Orthotheciadelphus Dixon – synonym of Orthothecium
* Orthothecium Schimp. – now in Plagiotheciaceae
* Phyllodon Bruch & Schimp. – now in Symphyodontaceae
* Platygyrium Schimp. – now in Pylaisiadelphaceae
* Ptilium De Not. – now in Pylaisiaceae
* Puiggariella Broth. – synonym of Puiggariopsis
* Puiggariopsis M. Menzel – now in Hylocomiaceae
* Pylaisia Schimp. – now in Pylaisiaceae
* Pylaisaea Müll. Hal. – synonym of Pylaisia
* Rhizohypnum Herzog – synonym of Mittenothamnium
* Taxiphyllum M. Fleisch. – now in Taxiphyllaceae
* Trachythecium M. Fleisch. – now in Symphyodontaceae
* Tutigaea Ando 1958 – synonym of Hondaella