The Polytrichopsida is a class of mosses containing two orders.[1] Members of this class tend to be larger than other mosses with a thickened central stem. The leaves have a midrib that bears lamellae on the upper surface. Species in this group are dioicous. Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Divisions Green algae land plants (embryophytes) non-vascular embryophytes Hepatophyta - liverworts Anthocerophyta - hornworts Bryophyta - mosses vascular plants (tracheophytes) seedless vascular plants Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongue ferns seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta... For other uses, see Moss (disambiguation). ... For other uses, see Moss (disambiguation). ... Gill may refer to one of the following. ... This article is in need of attention from an expert on the subject. ...
References
^ Buck, William R. & Bernard Goffinet. 2000. "Morphology and classification of mosses", pages 71-123 in A. Jonathan Shaw & Bernard Goffinet (Eds.), Bryophyte Biology. (Cambridge: Cambridge University Press). ISBN 0-521-66097-1.
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