| Family | VIOLACEAE |
| Genus species | Viola boninensis Nakai sect. Viola |
| Bibliography | Bot. Mag. (Tokyo) 36: 37 (1922) |
| Native Range | Japan |
| Primary Biome | Temperate |
| Habitat | grassland and thickets |
| Description | leaves triangular-lanceolate to ovate, 3-5cm long, petiolate, sinuate-dentate, flowers 2-3cm across, striate, calyx hirsute |
| Size | 10-20cm |
| Color | purple, white |
| Bloom | late spring |
| Ca | |
| Type | perennial |
| Cultivation | mesic, slightly humous, semi-shady site alpine house, moist, rich, drained soil, semi-shade |
| Propagation | seed in winter, barely covered, germ. 1-3 months, 13-16°C division after flowering and in fall |
| Synonyms | Viola mandshurica var. boninensis (Nakai) Mizush. Viola mandshurica f. niijimensis (Nakai) F.Maek. & T.Hashim. Viola mandshurica f. pubigera Hiyama ex F.Maek. Viola mandshurica var. triangularis (Franch. & Sav.) Mizush. Viola patrinii var. triangularis Franch. & Sav. Viola niijimensis Nakai |
| Territory | 3 Asia-Temperate 38 Eastern Asia (JAP Japan) |