Distribution: China (Guangdong, Hainan, Yunnan); Japan; Ryukyu Isl.; Taiwan (incl. Lan Yu Isl.); Nepal; Bhutan; India (?Arunachal Pradesh, Assam State, Bihar, Karnataka, Kerala, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Odisha, Tamil Nadu, Tripura, Uttarakhand, Uttar Pradesh, West Bengal); Sri Lanka; Bangladesh; Nicobar Isl.; Myanmar; Thailand; Laos; Cambodia; Vietnam; peninsular Malaysia (north of Peninsula); Sumatra; Borneo (Mt. Kinabalu, Sabah, Sarawak, Kalimantan); Sulawesi; Palawan; Philippines; Java; Lesser Sunda Isl. (Sumba, Wetar); Moluccas (Seram, Ambon); New Guinea (Irian Jaya, Papua New Guinea); Bismarck Arch. (Admiralty Isl.); Solomon Isl. (Baga, Bougainville, Guadalcanal, Santa Ysabel, Kolombangara, Malaita, New Georgia, Nggatokae, Rendova, Vangunu, Vella Lavella); Australia (N-Western Australia, Northern Territory, E-Queensland); Santa Cruz Isl.; New Caledonia; Palau (Babeldaob); Guam; Fed. States of Micronesia (Yap)
36 CHI 38 JAP NNS TAI 40 BAN BHU IND NEP SRL 41 CBD LAO MYA NCB THA VIE 42 BOR JAW LSI MLY MOL NWG PHI PLW SUL SUM 43 BIS SOL 50 AUS 60 NWC SCZ 62 GUM MIC PLU
Synonyms: hidden
= Botrychium zeylanicum (L.) Sw.; J. Bot. (Schrader) 1801: 111 (1801)
= Botryopteris crenata (C.Presl) C.Presl; Abh. Königl. Böhm. Ges. Wiss., ser. 5, 5: 324 (1848)
= Botryopteris mexicana C.Presl; Reliq. Haenk. 1: 76, t. 12, f. 1 (1825)
= Helminthostachys crenata C.Presl; Suppl. Tent. Pterid. 60 (1845)
= Helminthostachys dulcis Kaulf.; Flora 1822(1): 103 (1822)
= Helminthostachys integrifolia C.Presl; Suppl. Tent. Pterid. 60 (1845)
= Helminthostachys laciniata Voigt; Hort. suburb. Calcutt., 737 (1845)
= Helminthostachys mexicana (C.Presl) Spreng.; Syst. Veg. ed. 16, 4(1): 23 (1827)
= Helminthostachys zeylanica var. brachyspicae Nampy & Madhus.; J. Econ. Taxon. Bot. 18(1): 189 (1994) (fide Fraser-Jenkins 1997)
= Ophiala zeylanica (L.) Desv.; Mém. Soc. Linn. Paris 6: 195 (1827)
= Osmunda laciniata Noronha; Verh. Batav. Genootsch. Kunsten 6. 31 (1827)
= Osmunda zeylanica L.; Sp. Pl. 2: 1063 (1753)
