Classification
Kingdom: Plantae (2715)
Phylum: Tracheophyta (2630)
Class: Polypodiopsida (37)
Order: Polypodiales (35)
Family: Aspleniaceae (4)(family description)
Genus: Asplenium (4)
Epithet: ceterach L. (1)
Synonyms: Ceterach bivalens D.E.Mey., Ceterach officinarum Willd.
officinarum => of practical use to man; official species in commerce, especially for medicinal purposes