Ophioglossaceae

Sceptridium daucifolium (Wall. ex Hook. & Grev.) Lyon (Tropical & Subtropical Asia to SW. Pacific: Assam, Borneo, China South-Central, China Southeast, East...

Helminthostachys zeylanica (L.) Hook. (Tropical & Subtropical Asia to W. Pacific: Assam, Bangladesh, Bismarck Archipelago, Borneo, Cambodia, Caroline Is., China South-Central, China...

Ophioglossum costatum R. Br. (Tropical & Subtropical Old World to N. Australia: Angola, Ascension, Assam, Bangladesh, Botswana, Burkina, Burundi, Cameroon, Caroline Is.,...