Helminthostachys zeylanica is a species in the Helminthostachys genus. This name is accepted name for the species in the family Ophioglossaceae subfamily Helminthostachyoideae, . This species is found in Assam, Bangladesh, Bismarck Archipelago, Borneo, Cambodia, Caroline Is., China South-Central, China Southeast, East Himalaya, Hainan, India, Laos, Lesser Sunda Is., Malaya, Maluku, Marianas, Myanmar, Nansei-shoto, Nepal, New Caledonia, New Guinea, Nicobar Is., Northern Territory, Philippines, Queensland, Santa Cruz Is., Solomon Is., Sri Lanka, Sulawesi, Sumatera, Taiwan, Thailand, Vietnam, West Himalaya, Western Australia.