Members of the Violet
family, have colored stripes and highlights that fluoresce in ultraviolet
light. These "decorations" are arranged in a way that may provide
guidance to pollinating insects. Some have both stripes and highlights,
others have only stripes.
Do the blossoms
have a yellow center highlight or yellow blossom?
(B1), Without Yellow Center
(B2), With Yellow Center or Flower
Or you can bypass the key and go directly to
any of the species below