Gnetidae

Gnetidae
Scientific classification
Kingdom:	Plantae
Class:	Equisetopsida
Subclass:	Gnetidae; Pax in K.A.E.Prantl 1894
Families & Genera
	Gnetaceae Gnetum; ; Welwitschiaceae Welwitschia; ; Ephedraceae Ephedra; ;

Gnetidae is a subclass of Equisetopsida in the sense used by Mark W. Chase and James L. Reveal in their 2009 article "A phylogenetic classification of the land plants to accompany APG III."^[1] This subclass comprises the gnetophytes. The Gnetidae subclass is equivalent to the division Gnetophyta and class Gnetopsida of previous treatments.

Phylogeny

The following diagram shows a likely phylogenic relationship between subclass Gnetidae and the other Equisetopsida subclasses.^[2]

Equisetopsida

	Marchantiidae

	Bryidae

	Anthocerotidae

	Lycopodiidae

	Equisetidae

	Ophioglossidae

	Marattiidae

	Polypodiidae

	Cycadidae

	Ginkgoidae

	Gnetidae

	Pinidae

	Magnoliidae

References

^ Mark W. Chase; James L. Reveal (2009). "A phylogenetic classification of the land plants to accompany APG III". Botanical Journal of the Linnean Society. 161: 122–127. doi:10.1111/j.1095-8339.2009.01002.x.
^ Maarten J. M. Christenhusz; James L. Reveal; Aljos Farjon; Martin F. Gardner; Robert R. Mill; Mark W. Chase (2011). "A new classification and linear sequence of extant gymnosperms" (PDF). Phytotaxa. 19: 55–70.

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[Chase-2009-1] Mark W. Chase; James L. Reveal (2009). "A phylogenetic classification of the land plants to accompany APG III". Botanical Journal of the Linnean Society. 161: 122–127. doi:10.1111/j.1095-8339.2009.01002.x.

[Christenhusz-2011-2] Maarten J. M. Christenhusz; James L. Reveal; Aljos Farjon; Martin F. Gardner; Robert R. Mill; Mark W. Chase (2011). "A new classification and linear sequence of extant gymnosperms" (PDF). Phytotaxa. 19: 55–70.

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