Gymnospermae

1 definition found

From WordNet (r) 2.0 [wn]:

  Gymnospermae
       n : 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) [syn: {class
           Gymnospermae}, {Gymnospermophyta}, {division
           Gymnospermophyta}]