Ruellia caroliniensis
Ruellia caroliniensis is a wild petunia with blue or violet flowers that appear in the spring, summer, and autumn. Its leaves are light green. This species is native to the southeastern United States.
Source: en.wikipedia.org/wiki/Ruellia_caroliniensis - 29.11.2011
Ruellia caroliniensis
The gentle blossoms of the American wild bush vary from light blue to light lilac.