| Family | Lygodiaceae (alt. Schizaeaceae) |
| Scientific name | Lygodium japonicum (Thunberg) Swartz forma elongatum Altenwerelt van Rosenburgh |
| Synonyms | (Synonyms of Lygodium japonicum (Thunberg) Swartz) Hydroglossum japonicum (Thunberg) Willdenow; Lygodium chaerophylloides Desvaux; Lygodium dissectum Desvaux; Lygodium japonicum (Thunberg) Swartz var. macrostachyum Tagawa; Lygodium japonicum (Thunberg) Swartz var. microstachyum (Desvaux) Tardieu; Lygodium mearnsii Copeland; Lygodium microsachyum Desvaux; Lygodium microsachyum Desvaux var. glabrescens Nakai; Lygodium pubescens Kaulfuss; Lygodium tenue Blume; Ophioglossum japonicum Thunberg |
| Common name | (Japanese common name) nagaba-kani-kusa [long leaved crab weed] |
| (English common name) none | |
| Distribution | (Japan) Okinawa |
| (Other nations) none | |
| Chromosomal number | 2n=58 |
| Description | Plants creeping, over 200cm lengs Summergreen (sometimes evergreen). Vine. Perennial plants. |
| Reference | Lygodium japonicum (Thunb.) Sw. |
| Lygodium japonicum (Thunb.) Sw. | |
| Japanese Climbing Fern - Lygodium japonicum | |
| Lygodium Swartz (Lygodiaceae) | |
| Hygienic bag and preparation thereof (US Patent 6123946/2000) | |
| Orally available light-independent antineoplastic compounds (WIPO Patent WO/2008/002460) | |
| Note | Many authors describe that Lygodium japonicum (Thunberg) Swartz forma elongatum Altenwerelt van Rosenburgh is a synonym of Lygodium japonicum (Thunberg) Swartz. |
| January 2008 at Tsukuba Botanical Garden |
January 2008 at Tsukuba Botanical Garden |