| 单词 | class Psilotatae |
| 释义 | class Psilotatae (extremely rare) n WORD FAMILY class Psilotatae n whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs Syn|Hyper Psilopsida, Psilotatae, class Psilopsida class (biology) a taxonomic group containing one or more orders |
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