gymnospermae
English Thesaurus
1. 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)
hypernym | : | class, |
definition | : | (biology) a taxonomic group containing one or more orders (noun.group) |
member holonym | : | gymnosperm, |
definition | : | plants of the class Gymnospermae having seeds not enclosed in an ovary (noun.plant) |
member holonym | : | class coniferopsida, coniferophyta, coniferophytina, coniferopsida, subdivision coniferophytina, |
definition | : | cone-bearing gymnosperms dating from the Carboniferous period; most are substantial trees; includes the classes Pinopsida (subdivision Pinophytina) and Ginkgopsida (subdivision Ginkgophytina) and Taxopsida (subdivision Taxophytina) which in turn include the surviving orders Coniferales and Taxales (yews) and sometimes Ginkgoales as well as extinct orders such as Cordaitales (of the Carboniferous and Permian) (noun.plant) |
member holonym | : | gymnospermous tree, |
definition | : | any tree of the division Gymnospermophyta (noun.plant) |
member meronym | : | division spermatophyta, spermatophyta, |
definition | : | seed plants; comprises the Angiospermae (or Magnoliophyta) and Gymnospermae (or Gymnospermophyta); in some classification systems Spermatophyta is coordinate with Pteridophyta (spore producing plants having vascular tissue and roots) and Bryophyta (spore producing plants lacking vascular tissue and roots) (noun.plant) |
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