| Family | Ranunculaceae |
| Subfamily | Ranunculoideae |
| Tribe | Anemoneae |
| Scientific name | Anemone flaccida F. Schmidt |
| Synonyms | Anemone baicalensis Turczaninow subsp. flaccida (F. Schmidt) Ulbrich; Anemone baicalensis Turczaninow var. laevigata A. Gray; Anemone laevigata (A. Gray) Koidzumi; Anemonoides flaccida (F. Schmidt) Holub; Arsenjevia flaccida (F. Schmidt) Starodubtzev |
| Common name | (Japanese common name) nirin-sou (ニリンソウ, 二輪草 [meaning: twin flowers weed]) |
| (English common name) hepatica | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia, China | |
| Chromosomal number | 2n=14 |
| Description | Scapes 20-30cm tall. Flowers one, two or three (mainly two) white (merely green) flowers ca. 3-3.5mm across, flowering in March to May. Perennial plants. |
| Reference | Anemone flaccida F. Schmidt |
| Anemone flaccida F. Schmidt | |
| Anemone flaccida F. Schmidt |
| May 2007 at mountane forest |
May 2007 at mountane forest |
May 2007 at mountane forest |
| May 2007 at mountane forest |
May 2007 at mountane forest |
May 2007 at mountane forest |
| April 2009 at mountane forest |
April 2009 at mountane forest |