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nounplants 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)type of:
Definition that contains gymnospermophyta
- gymnospermous tree any tree of the division Gymnospermophyta
- spermatophyta 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)
- class taxopsida yews: in some systems classified as a class (Taxopsida) and in others as a subdivision (Taxophytina) used in some classifications for one of five subdivisions of Gymnospermophyta
- subdivision taxophytina yews: in some systems classified as a class (Taxopsida) and in others as a subdivision (Taxophytina) used in some classifications for one of five subdivisions of Gymnospermophyta
- ginkgopsida ginkgos: in some systems classified as a class and in others as a subdivision; used in some classifications for one of five subdivisions of Gymnospermophyta
- class ginkgopsida ginkgos: in some systems classified as a class and in others as a subdivision; used in some classifications for one of five subdivisions of Gymnospermophyta
- pinophytina most conifers: in some systems classified as a class (Pinopsida) and in others as a subdivision (Pinophytina); used in some classifications for one of five subdivisions of Gymnospermophyta
- subdivision ginkgophyta ginkgos: in some systems classified as a class and in others as a subdivision; used in some classifications for one of five subdivisions of Gymnospermophyta
- division 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)
- taxophytina yews: in some systems classified as a class (Taxopsida) and in others as a subdivision (Taxophytina) used in some classifications for one of five subdivisions of Gymnospermophyta