Gnetophyta


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Related to Gnetophyta: Angiosperms
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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 ?
To obtain sequences of WOX family in plant kingdom, we used the full-length sequence of AtWUS (At2g17950) [7] as a TBLASTN query against the available genome sequences (see Supplementary Table 1 in Supplementary Materials available online at http://dx.doi.org/10.1155/2013/534140) including the unicellular green algae (3 species), the bryophyte (1 species), the Lycopodiophyta (1 species), the Gnetophyta (1 species), the coniferophyta (4 species), the Ginkgophyta (1 species), and flowering plants (39 species).
Among the living gymnosperms, four phyla could be considered: Cycadophyta (cycads), Ginkgophyta (Ginkgo biloba L.), Coniferophyta (conifers), and Gnetophyta (gnetophytes) [1].
Las Eudicots representan el 78% de los taxones con 313 especies, las Monocots el 16%, las Gnetophyta representadas por dos especies (0,5%) y los Pteridofitos con 23 especies (5,8%) (Tabla 2).