gymnosperm

Noun
  1. Plants of the class Gymnospermae having seeds not enclosed in an ovary (synset 111616559)
    is a type of: phanerogam, seed plant, spermatophyte - plant that reproduces by means of seeds not spores
    subtypes:
    • progymnosperm - an ancestral fossil type from which modern gymnosperms are thought to have derived
    • welwitschia, welwitschia mirabilis - curious plant of arid regions of southwestern Africa having a yard-high and yard-wide trunk like a turnip with a deep taproot and two large persistent woody straplike leaves growing from the base; living relic of a flora long disappeared; some may be 700-5000 years old
    • cycad - any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves
    • pteridosperm, seed fern - an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)
    belongs to: class gymnospermae, division gymnospermophyta, gymnospermae, 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)

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