Viola hastata, commonly known as the halberd-leaved yellow violet, is a perennial plant in the violet family found in the eastern United States. It blooms from March to May with yellow flowers.
^ abcdJustice, William S.; Bell, C. Ritchie; Lindsey, Anne H. (2005). Wild Flowers of North Carolina (2. printing. ed.). Chapel Hill, NC: Univ. of North Carolina Press. p. 156. ISBN0807855979.