#viola  any of the numerous plants of the genus Viola
  supertype:  #herbaceous_plant__herb  a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
  member of:  #genus_Viola
  subtype:  #violet  any of numerous low-growing small-flowered violas
     subtype:  #American_dog_violet__Viola_conspersa  violet of eastern North America having pale violet to white flowers
     subtype:  #sweet_white_violet__sweetwhiteviolet__white_violet__whiteviolet__woodland_white_violet__Viola_blanda  short-stemmed violet of eastern North America having fragrant purple-veined white flowers
     subtype:  #Canada_violet__tall_white_violet__white_violet__whiteviolet__Viola_canadensis  tall North American perennial with heart-shaped leaves and purple-streaked white flowers
     subtype:  #dog_violet__dogviolet__heath_violet__heathviolet__Viola_canina  Old World leafy-stemmed blue-flowered violet
     subtype:  #two-eyed_violet__heartsease__Viola_ocellata  violet of Pacific coast of North America having white petals tinged with yellow and deep violet
     subtype:  #sweet_violet__sweetviolet__garden_violet__English_violet__Viola_odorata  European violet typically having purple to white flowers; widely naturalized
     subtype:  #bird's-foot_violet__pansy_violet__pansyviolet__Johnny-jump-up__wood_violet__Viola_pedata  common violet of the eastern United States with large pale blue or purple flowers resembling pansies
     subtype:  #downy_yellow_violet__Viola_pubescens  violet of eastern North America having softly pubescent leaves and stems and clear yellow flowers with brown-purple veins
     subtype:  #long-spurred_violet__Viola_rostrata  violet of eastern North America having lilac-purple flowers with a long slender spur
     subtype:  #pale_violet__striped_violet__stripedviolet__cream_violet__creamviolet__violastriata  leafy-stemmed violet of eastern North America having large white or creamy flowers faintly marked with purple
     subtype:  #hedge_violet__hedgeviolet__wood_violet__Viola_sylvatica__Viola_reichenbachiana  common European violet that grows in woods and hedgerows
  subtype:  #field_pansy__fieldpansy__heartsease__Viola_arvensis  common Old World viola with creamy often violet-tinged flowers
  subtype:  #horned_violet__tufted_pansy__Viola_cornuta  European viola with an unusually long corolla spur
  subtype:  #Viola_tricolor_hortensis__pansy  large-flowered garden plant derived chiefly from the wild pansy of Europe and having velvety petals of various colors
  subtype:  #wild_pansy__Johnny-jump-up__heartsease__love-in-idleness__pink_of_my_John__Viola_tricolor  a common and long cultivated European herb from which most common garden pansies are derived

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