| Section | Trigonocarpae Gordon | |
|---|---|---|
| Scientific Name | Type species | Viola riviniana Reichb. Pl. Crit. 1: 81. (1823) |
| Variety | ||
| Form | ||
| Synonym |
Viola labradorica Schrank 'Purpurea'
Viola labradorica var. Purpurea Many others |
|
| Origin | labradorica : Area name | |
| Common names | 【English】Common Dog-violet, Wood violet, Alpine Violet, Labrador Violet | |
| Stalk Form | A flower scape is extended from a stalk, and a flower blooms from each scape. | |
| Habitat | It grows wild in a moderately shady woodland and grassland. | |
| Distribution | Japan domestic | |
| Japan overseas | Distributed over Europe, North Africa, North America, Canada, Greenland. | |
| Others | ||
| Flower | Shape | Middle size. The base of the side valve is hairy (white hair). |
| Color | Violet blue. A purple article is in the labial palp. | |
| Spur | Short and thick. | |
| Season | Early blooming. | |
| Stigma | ||
| Aromatic | No fragrance. | |
| Others | Sometimes treated as a herb. Horticulturally, it is also treated as a ground cover plant. | |
| Leaf | Shape | Heart-shaped. |
| Color | Basically both surfaces are dark purplish-green. It becomes the darker color in winter. | |
| Others | Short and white hair grows thick in the whole. | |
| Seed | Shape | Medium size. Tearing drop (bulging oval). |
| Color | Brown to ocher. | |
| Others | Strong against cold, and as a result, it has a strong fertility. | |
| Characteristics of roots | ||
| Endangered Information | ||
| Type Specimen | United Kingdom of Great Britain and Northern Ireland. | |
| Chromosome Number | 2n=20 | |
| Reference Information | ||
| Others | It is said to be a group close to Viola sacchalinensis. | |
  left : Issued in Republic of Ireland 2004 right : Issued in Republic of Estonia 2004 |
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