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Equisetopsida is the name of a class of plants that traditionally contains the single genus ''Equisetum'' (horsestails). However in 2009, in an article titled "A phylogenetic classification of the land plants to accompany APG III," Mark W. Chase and James L. Reveal proposed a much broader sense for the Equisetopsida class name. In their system, Equisetopsida includes all land plants (embryophytes). Their rationale was that "If the major clades of green algae are recognized as classes, then all land plants, the embryophytes, should be included in a single class..."〔 ==Subclasses== The class Equisetopsida ''sensu'' Chase & Reveal, 2009, contains the following subclasses. Traditional divisions and classes, along with common names are shown in parentheses.〔 *bryophytes (non-vascular plants) * *Subclass Marchantiidae (div. Marchantiophyta, 3 classes - liverworts) * *Subclass Bryidae (div. Bryophyta, class Bryopsida - moss) * *Subclass Anthocerotidae (div. Anthocerotophyta, 2 classes - hornwort) *lycopodiophytes * *Subclass Lycopodiidae (div. Lycopodiophyta, 2 classes - clubmoss, spikemoss, quillworts) *monilophytes (ferns)〔 * *Subclass Equisetidae (class Equisetopsida, ''s.s.'' - horsetails) * *Subclass Ophioglossidae (class Psilotopsida - whisk ferns, grape-ferns, moonworts) * *Subclass Marattiidae (class Marattiopsida - marattioid ferns) * *subclass Polypodiidae (class Polypodiopsida - polypod ferns) * *Subclass Psilotidae (into Ophioglossidae by Christenhusz, 2011 ) *gymnosperms〔 * *Subclass Cycadidae (div. Cycadophyta, class Cycadopsida - cycads) * *Subclass Ginkgoidae (div. Ginkgophyta, class Ginkgoopsida, one extant genus: ''Ginko'') * *Subclass Gnetidae (div. Gnetophyta, class Gnetopsida - gnetophytes) * *Subclass Pinidae (div. Pinophyta, class Pinopsida - conifers) *angiosperms〔 * *Subclass Magnoliidae (Angiosperms - flowering plants) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Equisetopsida sensu lato」の詳細全文を読む スポンサード リンク
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