| Family | Orchidaceae |
| Subfamily | Epidendroideae |
| Tribe | Neottieae |
| Subtribe | Limodorinae |
| Scientific name | Epipactis thunbergii A. Gray forma subconformis Sakata |
| Synonyms | none |
| Common name | (Japanese common name) isoma-kaki-ran (イソマカキラン, 磯間柿蘭 [meaning: coastal persimmon orchid]) |
| (English common name) helleborine | |
| Distribution | (Japan) Kyushu (southern area) |
| (Other nations) none | |
| Habitat | Wet field, swamp. |
| Chromosomal number | 2n=40 |
| Description | Plants electing 30-70cm tall. Leaves 6-13cm long, 3-5cm wide. Flowers yellow, side petal like lip, flowering in May to June. Terrestrial. Perennial plants. |
| Reference | Epipactis thunbergii A.Gray 1856 |
| Epipactis thunbergii A. Gray |
| June 2009 at my home |
June 2009 at my home |