gnetophytina
English Thesaurus
1. 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) (noun.plant)
| hypernym | : | class, |
| definition | : | (biology) a taxonomic group containing one or more orders (noun.group) |
| member holonym | : | gnetales, order gnetales, |
| definition | : | chiefly tropical or xerophytic woody plants; practically unknown as fossils but considered close to the ancestral line of angiosperms (noun.plant) |
| member meronym | : | class gymnospermae, division gymnospermophyta, gymnospermae, gymnospermophyta, |
| definition | : | 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) (noun.plant) |
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