| Family | Ranunculaceae |
| Subfamily | Ranunculoideae |
| Tribe | Adonideae |
| Scientific name | Callianthemum miyabeanum Tatewaki |
| Synonyms | Callianthemum insigne Nakai var. miyabeanum (Tatewaki) Kitamura |
| Common name | (Japanese common name) hidaka-sou (ヒダカソウ, 日高草 [meaning: Hidaka Mountains weed]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido (Mt. Apoi) |
| (Other nations) none | |
| Habitat | Alpine rocks |
| Chromosomal number | 2n=32 (4x) |
| Description | Plants 10-25cm tall. Flowers white 2-2.5cm across, flowering in May to June. Perennial plants. |
| Reference | Comparisons of size class structure among populations and growth characteristics as population dynamics of Callianthemum miyabeanum(Features I) |
| Note | Endemic to Japan. Rare species. |
| April 2008 at Rokko Alpine Botanical Gardem |
April 2008 at Rokko Alpine Botanical Gardem |