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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psilopsida::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Synonyms | class psilopsida, class psilotatae, psilotatae |
| Type of | class |
