kingdom Plantae - plants »  divisio Magnoliophyta - flowering plants »  class Rosopsida - eudicots » order Malpighiales »  family Violaceae »  tribus Violeae > genus Viola > section Viola sect. Chamaemelanium  Ging. 

subsection Viola subsect. Orbiculares  Pollard 

Viola orbiculata Geyer ex Holz. - Round Leaved Violet 

Viola rotundifolia Michx. - Roundleaf Yellow Violet

Viola sempervirens Greene - Evergreen Violet