The violet genus (Viola) is one of the more than 20 or more generea of the family Violaceae. There are 500 plus species of violets, and a lot more assortments. Most species of violets flourish in the Northern Hemisphere, and about 20 percent are indigenous to the U.S.
Violets are easy to distinguish through their small flowery "faces" and leaves, which unfurl from the base as they age. The lobes stand more or less vertical while staying inwardly curled. The lowest of the petals includes spur, which contains the sweet nectar and perfume.
Read more: A Basic Guide to Growing & Using Medicinal Violets