#class_Psilopsida__Psilopsida__Psilotatae__class_Psilotatae whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs
supertype: class__clas (biology) a taxonomic group containing one or more orders
member of: division_Pteridophyta
member: order_Psilotales__Psilotales lower vascular plants having dichotomously branched sporophyte divided into aerial shoot and rhizome and lacking true roots
member: family_Psilotaceae__Psilotaceae small family of lower ferns having nearly naked stems and minute scalelike leaves
member: genus_Psilotum__Psilotum type genus of the Psilotaceae
member: whisk_fern__whiskfern chiefly tropical clump-forming plants of skeletal appearance resembling whisk brooms; lacking roots
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