| Section | Bilobatae W. Becker | |
|---|---|---|
| Scientific Name | Type species | Viola verecunda A. Gray : {Nyoi Sumire} Published In: Mem. Amer. Acad. Arts, n.s. 6(2): 382 (1858) |
| Variety | Viola verecunda var. yakusimana (Nakai) Ohwi : {Koke Sumire} | |
| Form | ||
| Synonym | Viola yakusimana Nakai [B. M. T. 36: 35 (1922)] | |
| Origin | yakusimana : originating in a name of a island. | |
| Common names | ||
| Stalk Form | A flower scape is extended from a stalk, and a flower blooms from each scape. | |
| Habitat | Acid marshland. It grows so that a face may be taken out from the moss and sphagnum moss growing in the damp area. | |
| Distribution | Japan domestic | A variety peculiar to Yakushima (Kagoshima Pef.). |
| Japan overseas | ||
| Others | ||
| Flower | Shape | Very small size. |
| Color | White, purple-striate on low and side petal. | |
| Spur | Bag-shaped, thick and short. | |
| Season | Late (May-September, mid-season June-August). It keeps blooming relatively long, mainly in July. | |
| Stigma | ||
| Aromatic | ||
| Others | The upper valve often bends and blooms. | |
| Leaf | Shape | Oval heart shape. Thick and shiny. 1 - 1.3cm long, 1.5 - 2cm wide. |
| Color | Both sides are deep green. | |
| Others | ||
| Seed | Shape | Rounded drip-proof shape. |
| Color | Dark brown. | |
| Others | ||
| Characteristics of roots | ||
| Endangered Information | Kagoshima : ThreatenedⅠ | |
| Type Specimen | Yakushima Island in Kagoshima. | |
| Chromosome Number | 2n=24 | |
| Reference Information | ||
| Fruit & Seeds |
 Left : Viola verecunda var. yakusimana : There are only three seeds in a fruit. Right : Viola verecunda f. violacens : This seed is a little smaller than yakusimana. |
|
| Others | It is assumed that it adjusts to the environment and it trivialized extremely. The flowering season keeps blooming comparatively long around July. | |
