Common Blue Violet
Viola sororia /Violet Family
These violets have not only the colorful, easily seen flowers, but also "cleistogamous" --- closed, self-pollinating --- flowers that grow near the ground. The seed pods of these flowers later mature, split open and throw their seeds. These were blooming in the woods in Oak Ridge.
Where seen:Oak Ridge Greenways, Great Smoky Mountains NP, Haw Ridge, Ijams Nature Center, widespread