Helminthostachys

Helminthostachys is a fern genus in the Ophioglossaceae family. It is widespread throughout southeast Asia and Australia.

Taxonomy

The Smith et al. classification of 2006, based on molecular phylogeny, placed Helminthostachys in Ophioglossaceae. Subsequent classifications have maintained this placement. The PPG I classification assigns it as the sole member of the subfamily Helminthostachyoideae.