Gnetophyta

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Related to Gnetophytes: Gnetopsida
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Noun1.Gnetophyta - gymnospermous flowering plants; supposed link between conifers and angiosperms; in some systems classified as a class (Gnetopsida) and in others as a subdivision (Gnetophytina or Gnetophyta)
class - (biology) a taxonomic group containing one or more orders
class Gymnospermae, division Gymnospermophyta, Gymnospermae, Gymnospermophyta - plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina (class Gnetopsida) and Coniferophytina (class Coniferopsida); in some classifications the Coniferophytina are divided into three groups: Pinophytina (class Pinopsida) and Ginkgophytina (class Ginkgopsida) and Taxophytina (class Taxopsida)
Gnetales, order Gnetales - chiefly tropical or xerophytic woody plants; practically unknown as fossils but considered close to the ancestral line of angiosperms
References in periodicals archive ?
In this respect, Ephedra is similar to other gnetophytes (Welwitschia and Gnetum) (Endress, 1996).
Gymnosperms include the cycads, gnetophytes (including Ephedra), Gingko, and conifers.
MADS-box genes reveal that gnetophytes are more closely related to conifers than to flowering plants.