Word
Psilopsida, n.
whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs
<noun.plant>
Psilopsida
Psilotatae
class Psilopsida
class Psilotatae
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hypernym
member holonym
member meronym