Three-Lobed Violet, Viola triloba
Violaceae or Violet Family
 

Low herb.  Typical violet flowers, purple, with white hairs in center.  Leaves heart-shaped overall, but with three to five lobes; some leaves, however, may be unlobed.  Blooms in mid to late spring.

A woodland plant.  Occasional in the woods on the eastern slope of the Park.

If the leaves have clear lobes, this violet is easily identified.  If the leaves are poorly or not at all lobed, it can be easily confused with common blue violet (Viola sororia), but that plant prefers open areas.