division pteridophyta
English Thesaurus
1. containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta (noun.plant)
hypernym | : | division, |
definition | : | (botany) taxonomic unit of plants corresponding to a phylum (noun.group) |
member holonym | : | genus pecopteris, |
definition | : | genus of Carboniferous fossil ferns (noun.plant) |
member holonym | : | nonflowering plant, pteridophyte, |
definition | : | plants having vascular tissue and reproducing by spores (noun.plant) |
member holonym | : | fern family, |
definition | : | families of ferns and fern allies (noun.plant) |
member holonym | : | fern genus, |
definition | : | genera of ferns and fern allies (noun.plant) |
member holonym | : | class filicinae, class filicopsida, filicinae, filicopsida, |
definition | : | ferns (noun.plant) |
member holonym | : | class psilopsida, class psilotatae, psilopsida, psilotatae, |
definition | : | whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs (noun.plant) |
member holonym | : | order psilophytales, psilophytales, |
definition | : | Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants (noun.plant) |
member holonym | : | class equisetatae, class sphenopsida, equisetatae, sphenopsida, |
definition | : | horsetails and related forms (noun.plant) |
member holonym | : | class lycopodiate, class lycopsida, lycopodiate, lycopsida, |
definition | : | club mosses and related forms: includes Lycopodiales; Isoetales; Selaginellales; and extinct Lepidodendrales; sometimes considered a subdivision of Tracheophyta (noun.plant) |
member meronym | : | kingdom plantae, plant kingdom, plantae, |
definition | : | (botany) the taxonomic kingdom comprising all living or extinct plants (noun.plant) |
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