Small’s Beardtongue [Penstemon smallii], a member of the Figwort (Scrophulariaceae) family, found on the grounds of The Botanical Gardens at Asheville on 26 May 2013. It was the first visit there by the Vining family and it was a lovely day out. Newcomb’s Wildflower Guide, pages 102-103, says Beardtongues’ flowers are long, trumpet shaped, in terminal clusters.
USDA Plants Listing: http://plants.usda.gov/java/profile?symbol=PESM