| Family | Violaceae |
| Subfamily | Violoideae |
| Tribe | Violeae |
| Scientific name | Viola langsdorfii (Regel) Fischer ex Gingins subsp. sachalinensis W. Becker |
| Synonyms | Viola kamtchadalorum W. Becker & Hultén; Viola kamtschadalorum W. Becker & Hulten var. pubescens Miyabe & Tatewaki; Viola kurilensis Nakai; Viola langsdorfii (Regel) Fischer ex Gingins var. caulescens auct., non Gingins; Viola langsdorfii (Regel) Fischer ex Gingins subsp. sachalinensis W. Becker forma pubescens (Miyabe & Tatewaki) F. Maekawa; Viola langsdorfii auct., non (Regel) Fischer ex Gingins |
| Common name | (Japanese common name) ohba-tachi-tubo-sumire (オオバタチツボスミレ, 大葉立坪菫 [meaning: large leaved standing inkpot viola]) |
| (English common name) Alaska violet | |
| Distribution | (Japan) Hokkaiodo, Honshu (north of Central region) |
| (Other nations) Russia (Far East) | |
| Habitat | Subalpine field |
| Chromosomal number | 2n=96 |
| Description | Plants ca. 20-40cm tall. Leaves ca. 3-7cm long. Flowers purple ca. 2.5-3cm across, flowering in April to May. Perennial plants. |
| Reference | Viola langsdorffii Fisch. ex Ging. subsp. sachalinensis W. Becker |
| April 2010 at my home |
April 2010 at my home |
April 2010 at my home |
| April 2010 at my home |