What is the meaning of class psilopsida?

noun

  • Whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs.
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). class psilopsida. Retrieved October 2, 2026, from http://smartdefine.org/class_psilopsida/definitions/1265867
ChicagoWordNet. 2010. "class psilopsida" http://smartdefine.org/class_psilopsida/definitions/1265867 (accessed October 2, 2026).
HarvardWordNet 2010, class psilopsida, Smart Define, viewed 2 October, 2026, <http://smartdefine.org/class_psilopsida/definitions/1265867>.
MLAWordNet. "class psilopsida" 23 October 2010. Web. 2 October 2026. <http://smartdefine.org/class_psilopsida/definitions/1265867>