a division containing all the vascular plants that don't bear seeds; includes ferns, horsetails, club mosses, and whisk ferns; in some classifications, considered a subdivision of Tracheophyta
plant noun
Pteridophyta*
(* Pteridophyta may be used in a singular or plural context)
fern family | fern genus | Filicopsida | Lycopsida | Pecopteris | Psilophytales | Psilopsida | pteridophyte | Sphenopsida
Page last updated: 2009-12-07