| NOUN | plant | Psilotatae, Psilopsida, class Psilopsida, class Psilotatae | whisk ferns |
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| Meaning | whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs. | |
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| Synonyms | Psilopsida, class Psilopsida, class Psilotatae | |
| Member of | Pteridophyta, division Pteridophyta | Containing all the vascular plants that do not bear seeds |
| Members | Psilotales, order Psilotales | Lower vascular plants having dichotomously branched sporophyte divided into aerial shoot and rhizome and lacking true roots |
| Broader | class | (biology) a taxonomic group containing one or more orders |
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