Akademik

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)

↑gymnosperm family, ↑gymnosperm genus, ↑gymnosperm, ↑Gnetopsida, ↑class Gnetopsida, ↑Gnetophytina, ↑subdivision Gnetophytina, ↑Gnetophyta, ↑Cycadopsida, ↑class Cycadopsida, ↑Cycadophytina, ↑subdivision Cycadophytina, ↑Cycadophyta, ↑subdivision Cycadophyta, ↑Pteridospermopsida, ↑class Pteridospermopsida, ↑Coniferopsida, ↑class Coniferopsida, ↑Coniferophytina, ↑subdivision Coniferophytina, ↑Coniferophyta, ↑Ginkgopsida, ↑class Ginkgopsida, ↑Ginkgophytina, ↑class Ginkgophytina, ↑subdivision Ginkgophytina, ↑subdivision Ginkgophyta, ↑gymnospermous tree

: a class of Pteropsida or in some classifications a subdivision of Spermatophyta comprising seed plants (as cycads and conifers) that produce naked seeds not enclosed in an ovary and in some instances have motile spermatozoids and including the subclasses Cycadophytae and Coniferophytae — compare angiospermae, filicineae