Wildflowers of the Blue Ridge Parkway
J. Anthony Alderman
Not just a field guide, but a tour guide to 75 of the best sites along the Parkway for viewing wildflowers in spring, summer, and fall.
University of North Carolina.
To select from a dropdown list of genera, type only the first 2-3 letters.
If "briar" doesn't deliver the results you want, try an alternate spelling such as "brier", etc.