| Family | Violaceae |
| Scientific name | Viola bissetii Maximovicz |
| Synonyms | none |
| Common name | (Japanese common name) nagaba-no-sumire-saishin [long leaved viola saisin (saisin = a kind of traditional Chinese medicine)] |
| (English common name) none | |
| Distribution | (Japan) Honshu (west of Kanto region; mainly Pacific side), Shikoku, Kyushu |
| (Other nations) none | |
| Chromosomal number | 2n=24 |
| Description | Plants 5-12cm. Leaves 5-8cm length in flowering time. Flowers pale purple ca. 2cm, flowring in March to May. Perennial plants. |
| Reference | Viola bissetii Maxim. |
| April 2007 at Akagi Nature Park |
| April 2007 at Akagi Nature Park |
April 2007 at Akagi Nature Park |
April 2007 at Akagi Nature Park |
| April 2006 at mountane forest |
April 2006 at mountane forest |
April 2006 at mountane forest |