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WordNet (r) 3.0 (2006) (WordNet)

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

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