Sphagnopsida is a class of

moss Mosses are small, non-vascular plant, non-vascular flowerless plants in the taxonomic phylum, division Bryophyta (, ) ''sensu stricto''. Bryophyta (''sensu lato'', Wilhelm Philippe Schimper, Schimp. 1879) may also refer to the parent group bryo ...

es that includes a single subclass Sphagnidae, with two orders. It is estimated it originated about 465 million years ago, along with Takakia. The order

Sphagnales The Sphagnales is an order of mosses with four living genera: ''Ambuchanania'', ''Eosphagnum'', ''Flatbergium'', and ''Sphagnum''. The genus ''Sphagnum'' contains the largest number of species currently discovered (about 200, number varying accor ...

contains four living genera: '' Ambuchanania'', '' Eosphagnum'', and '' Flatbergium'', which counts four species in total, and ''

Sphagnum ''Sphagnum'' is a genus of approximately 380 accepted species of mosses, commonly known as sphagnum moss, also bog moss and quacker moss (although that term is also sometimes used for peat). Accumulations of ''Sphagnum'' can store water, since ...

'' which contains the rest of the species. The extinct Protosphagnales contains a single fossil species.

References

* Shaw, A. Jonathan (2000)
"Phylogeny of the Sphagnopsida Based on Chloroplast and Nuclear DNA Sequences"
''The Bryologist''. 103 (2): 277–306. Plant classes Taxa named by Ryszard Ochyra {{moss-stub