Moroccan Toadflax (Linaria marocanna) a lavender cultivar - the true form is purple-violet 2010-8-? Greenville, VA

bloom time: April to June?
http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=a589
http://www.alabamaplants.com/Pinkalt/Linaria_marocanna_page.html
http://www.outsidepride.com/seed/flower-seed/snapdragon-wildflower-seed.html
"Baby Snapdragon Toadflax bloom color is usually purple-violet with a yellow blotch on the palate."
-the yellow patch is barely visible, but visible on both flowers - when the photo's saturation is increased the yellow is more pronounced

see also:
BLUE TOADFLAX (Nuttallathus canadensis)
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Blue Toadflax - Dwarf Larkspur
Oldfield Toadflax - Canada Toadflax
Scrophulariaceae (Snapdragon) Family
Flowers occur in the spring.
http://wildflowers.jdcc.edu/Toadflax.html
TEXAS TOADFLAX (Nuttallanthus texanus)
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Nuttallanthus texanus
http://www.alabamaplants.com/Bluealt/Nuttallanthus_texanus_page.html
Texas toadflax, Toadflax
Bloom Time: Feb , Mar , Apr , May
http://www.wildflower.org/plants/result.php?id_plant=NUTE