| Family | Violaceae |
| Subfamily | Violoideae |
| Tribe | Violeae |
| Scientific name | Viola phalacrocarpa Maximowicz |
| Synonyms | Viola conilii Franchet & Savatier; Viola nipponica Makino, non Maximowicz; Viola phalacrocarpa Makino, non Maximowicz; Viola phalacrocarpoides Makino; Viola pseudoprionantha W. Becker; Viola reinii W. Becker |
| Common name | (Japanese common name) akane-sumire (アカネスミレ, 茜菫 [meaning: madder red viola]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) Russia (Far East), Korea, China | |
| Habitat | Hillock field or forest edge |
| Chromosomal number | 2n=24 |
| Description | Plants ca. 10cm tall, hairy. Leaves 1-3cm long (8cm long after flowering), 0.8-2.5cm wide (2-4cm wide after flowering), petioles 3-10cm long (10-20cm long after flowering). Flowers calyxs hairy, purple petals 1-1.3cm long, spurs 6-8mm log, flowering in April to May. Perennial plants. |
| Reference | Viola phalacrocarpa Maxim. |
| Viola phalacrocarpa Maximowicz |
| April 2008 at hillock forest |
April 2008 at hillock forest |
April 2008 at hillock forest |
| April 2007 at mountane forest |
April 2007 at Tsukuba Botanical Garden |
April 2007 at mountane forest |