Classification
Plantae [Kingdom]Tracheophyta [phylum]
Polypodiopsida [class]
Ophioglossidae [subclass]
F. Ophioglossales [order]
6. Ophioglossaceae [family]
Helminthostachyoideae [subfamily]
Subfamilia Helminthostachyoideae contains the following taxa:
Helminthostachys [genus]