Polytrichaceae

Polytrichaceae; Temporal range: Valanginian–Recent PreꞒ Ꞓ O S D C P T J K Pg N
	Polytrichum commune
Scientific classification
Kingdom:	Plantae
Division:	Bryophyta
Class:	Polytrichopsida; Doweld
Order:	Polytrichales; M. Fleisch.
Family:	Polytrichaceae; Schwägr.
Genera
	See text.

Polytrichaceae is a common family of mosses. Members of this family tend to be larger than other mosses with a thickened central stem and a rhizome. The leaves have a midrib that bears photosynthetic lamellae on the upper surface. Species in this group are dioicous. Another characteristic that identifies them is that they have from 32 to 64 peristome teeth in their sporangium.

Classification

The phylogenetic position of the Polytrichaceae among the eight classes of mosses, based on inferences from DNA sequence data.^[1]^[2]

	Tetraphidopsida

	Polytrichaceae

	Bryopsida

Genera

Atrichum undulatum

Extinct genera

Eopolytrichum Konopka, Herendeen, Merrill & Crane (1997), Gaillard Formation, Georgia, USA, Upper Cretaceous (Campanian)
Meantoinea Bippus, Stockey, Rothwell & Tomescu (2017) Apple Bay locality, Vancouver Island, Canada, Lower Cretaceous (Valanginian)

References

^ Goffinet, B.; W. R. Buck & A. J. Shaw (2008). "Morphology and Classification of the Bryophyta". In Bernard Goffinet & A. Jonathan Shaw (eds.). Bryophyte Biology (2nd ed.). Cambridge: Cambridge University Press. pp. 55–138. ISBN 9780521872256.
^ Goffinet, Bernard; William R. Buck (2004). "Systematics of the Bryophyta (Mosses): From molecules to a revised classification". Monographs in Systematic Botany. Molecular Systematics of Bryophytes. Missouri Botanical Garden Press. 98: 205–239. ISBN 1-930723-38-5.

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[Goffinet_2008-1] Goffinet, B.; W. R. Buck & A. J. Shaw (2008). "Morphology and Classification of the Bryophyta". In Bernard Goffinet & A. Jonathan Shaw (eds.). Bryophyte Biology (2nd ed.). Cambridge: Cambridge University Press. pp. 55–138. ISBN 9780521872256.

[Goffinet_&_Buck_2004-2] Goffinet, Bernard; William R. Buck (2004). "Systematics of the Bryophyta (Mosses): From molecules to a revised classification". Monographs in Systematic Botany. Molecular Systematics of Bryophytes. Missouri Botanical Garden Press. 98: 205–239. ISBN 1-930723-38-5.

[1]

[2]

Polytrichaceae

Contents

Classification

Genera

Extinct genera

References

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