Sphagnopsida

Sphagnopsida is a class of mosses that includes a single subclass Sphagnidae, with two orders. It is estimated it originated about 465 million years ago, along with Takakia.^[1] The order Sphagnales contains four living genera: Ambuchanania, Eosphagnum, and Flatbergium, which counts four species in total, and Sphagnum which contains the rest of the species. The extinct Protosphagnales contains a single fossil species.

class Sphagnopsida order Protosphagnales † order Sphagnales family Ambuchananiaceae family Flatbergiaceae family Sphagnaceae	Takakiopsida Sphagnopsida Andreaeopsida Andreaeobryopsida Oedipodiopsida Tetraphidopsida Polytrichopsida Bryopsida
The phylogenetic position of the Sphagnopsida among the eight classes of mosses, based on inferences from DNA sequence data.[2][3]

Sphagnopsida Temporal range: Permian to present PreꞒ Ꞓ O S D C P T J K Pg N
A clump of Sphagnum, peat moss
Scientific classification
Kingdom:	Plantae
Division:	Bryophyta
Subdivision:	Sphagnophytina
Class:	Sphagnopsida Ochyra
Orders
†Protosphagnales Sphagnales

References

1. Renzaglia, K. S.; Browning, W. B.; Merced, A. (2020). "With over 60 Independent Losses, Stomata Are Expendable in Mosses". Frontiers in Plant Science. 11: 567. doi:10.3389/fpls.2020.00567. PMC 7270291. PMID 32547571.
2. 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.
3. 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. 98. Missouri Botanical Garden Press: 205–239. ISBN 1-930723-38-5.

• Shaw, A. Jonathan (2000). "Phylogeny of the Sphagnopsida Based on Chloroplast and Nuclear DNA Sequences". The Bryologist. 103 (2): 277–306.