| Family | Woodsiaceae |
| Scientific name | Diplazium hachijoense Nakai |
| Synonyms | Athyrium hachijoense (Nakai) Ohwi; Allantodia hachijoense (Nakai) Ching |
| Common name | (Japanese common name) siroyama-shida [Mt. Shiroyama fern] |
| (English common name) none | |
| Distribution | (Japan) Honshu (west of Kanto region), Shikoku, Kyushu, Okinawa |
| (Other nations) Korea | |
| Chromosomal number | n=123 (3x) |
| Description | Leaves 50-100cm length, 50-100cm width. Evergreen (summer green in northern area). Perennial plants. |
| May 2007 at Tsukuba Botanical Garden |
May 2007 at Tsukuba Botanical Garden |
May 2007 at Tsukuba Botanical Garden |