Botrychiaceae
Botrychiaceae (moonwort family) was recognized as a segregate family of ferns. The family included the genera Botrychium (the moonworts), Botrypus (the rattlesnake fern), and Sceptridium (the grape-ferns). Older fern classifications took a broad circumscription of Botrychium and included the genus in family Ophioglossaceae.
The family is not recognized in the classification of Smith et al.,<ref name="Smith 2006">Template:Cite journal</ref> who instead subsume the Botrychiaceae into the Ophioglossaceae.