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Definitions of filicales
  1. noun
    true (leptosporangiate) ferns
    type of:
Definition that contains filicales
  • leptosporangium a sporangium formed from a single epidermal cell; characteristic of the Filicales or of almost all modern ferns
  • seed fern an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)
  • gleicheniaceae a family of ferns belonging to order Filicales
  • pteridosperm an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)
  • group pteridospermae used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales
  • pteridospermae used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales
  • group pteridospermaphyta used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales
  • pteridospermaphyta used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales
  • family gleicheniaceae a family of ferns belonging to order Filicales
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