Library / English Dictionary

    PSILOPSIDA

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    Whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacsplay

    Synonyms:

    class Psilopsida; class Psilotatae; Psilopsida; Psilotatae

    Classified under:

    Nouns denoting plants

    Hypernyms ("Psilopsida" is a kind of...):

    class ((biology) a taxonomic group containing one or more orders)

    Meronyms (members of "Psilopsida"):

    order Psilotales; Psilotales (lower vascular plants having dichotomously branched sporophyte divided into aerial shoot and rhizome and lacking true roots)

    Holonyms ("Psilopsida" is a member of...):

    division Pteridophyta; Pteridophyta (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)

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