| Section | Boreali-Americanae Gordon | |
|---|---|---|
| Scientific Name | Type species | Viola sororia Willd. 'Papilionacea' Published in: Hort. berol. 1: t. 72 (1806) | 
| Variety | 
			 Viola sororia var. affinis (Leconte) L.E. McKinney 
			Viola sororia var. missouriensis (Greene) L.E. McKinney 
			Viola sororia var. novae-angliae (House) L.E. McKinney 
			 | 
		|
| Form | ||
| Synonym | 
			 ≡Viola cucullata var. sororia (Willd.) Torr. & A.Gray 
			≡Viola palmata var. sororia (Willd.) Pollard 
			Viola chalcosperma Brainerd 
			Viola floridana Brainerd 
			Viola latiuscula Greene 
			 Viola papilionacea Pursh 
			And many others. 
			 | 
		|
| Origin | sororia : sisterly, of a sister, clumped (*uncertain), papilionacea : flowers have butterfly-shaped corollas | |
| Common names | 【Taiwanese】蝶花菫菜、【English】Common blue violet、hooded blue violet、dooryard violet、blue praire violet | |
| Stalk Form | The individual leaves and flowering stalks emerge directly from the rootstock. | |
| Habitat | It grows wild for grassland or a forest with the moisture brightly. | |
| Distribution | Japan domestic | |
| Japan overseas | Central part from the eastern part of North America. | |
| Others | ||
| Flower | Shape | Middle or large size. There are many white hair in a side dialect base. | 
| Color | Dark purple. | |
| Spur | Short. | |
| Season | Relatively long. | |
| Stigma | Inverted triangle shape. | |
| Aromatic | ||
| Others | ||
| Leaf | Shape | Heart-shaped leaf grows big in the summer. | 
| Color | Both surfaces are deep green. | |
| Others | ||
| Seed | Shape | Medium grain. Teardrop shape (bulging oval). | 
| Color | Glossy black-brown. | |
| Others | ||
| Characteristics of roots | White mustache root. | |
| Endangered Information | ||
| Type Specimen | ||
| Chromosome Number | 2n=54 | |
| Reference Information | ||
| Others | The number of cultivated plants is increasing like weeds. Polyben garden varieties such as double bloom and rose bloom are on sale. | |

		
		
		
		
		
		
		
		
		
		
		
		
		
	
		
	