411 REFERENCE · Wiktionary
Psilotopsida
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
Translingual
Etymology
mul Psilotum opsida
Proper noun
class subdivision Pterophyta the whisk ferns
Hyponyms
class Psilotales order, Ophioglossales order - orders
References
Polypodiopsida 1