| Family | Saxifragaceae |
| Scientific name | Astilbe thunbergii (Siebold et Zuccarini) Miquel var. hachijoensis (Nakai) Ohwi |
| Synonyms | Astilbe hachijoensis Nakai |
| Common name | (Japanese common name) hachijo-shoma (ハチジョウショウマ, 八丈升麻 [meaning: Hachijo Island shoma (shoma = Cimicifugae Rhizoma)]) |
| (English common name) none | |
| Distribution | (Japan) Izu Islands (Hachijo Island) |
| (Other nations) none | |
| Chromosomal number | unknown |
| Description | Plants 40-80cm tall. Flowers white, flowering in July to August. Prerennial plants. |
| Note | Endemic to Japan. |
| July 2007 at Tsukuba Botanical Garden |
July 2007 at Tsukuba Botanical Garden |
July 2007 at Tsukuba Botanical Garden |
| July 2007 at Tsukuba Botanical Garden |
July 2007 at Tsukuba Botanical Garden |
July 2007 at Tsukuba Botanical Garden |