Psilotopsida

== Translingual == === Etymology === Psilotum +‎ -opsida === Proper noun === Psilotopsida A taxonomic class within the subdivision Pterophyta – the whisk ferns. ==== Hyponyms ==== (class): Psilotales, Ophioglossales - orders === References === Psilotopsida on Wikipedia.Wikipedia Psilotopsida on Wikispecies.Wikispecies Polypodiopsida at the Tree of Life Web Project