| Family | Saxifragaceae |
| Scientific name | Mitella koshiensis Ohwi |
| Synonyms | none |
| Common name | (Japanese common name) koshi-no-charumeru-sou (コシノチャルメルソウ, 越チャルメル草 [meaning: Koshi's charamela weed (Koshi = an old name of Niigata Prefecture)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (Niigata Prefecture, Toyama Prefecture) |
| (Other nations) none | |
| Habitat | Mountane riverside |
| Chromosomal number | 2n=28 |
| Description | Leaves 8-10cm long. Scapes 15-25cm tall. Flowers pale green or brown, flowering in March to April. Prerennial plants. |
| March 2007 at Yukiguni Botanical Garden |
March 2007 at Yukiguni Botanical Garden |
March 2007 at Yukiguni Botanical Garden |
| March 2007 at Yukiguni Botanical Garden |
March 2007 at Yukiguni Botanical Garden |