Linaria purpurea, commonly called purple toadflax, is an upright, clump-forming perennial that features violet, single-spurred, two-lipped, snapdragon-like flowers from late spring through much of the summer. Flowers appear in terminal racemes atop narrow, erect stems typically growing 18-24" (less frequently to 36") tall. Each plant produces numerous upright stems with narrow, linear, blue-green leaves.
Genus name comes from the medieval name from the Greek word linon and the Latin word linum in allusion to the flax like leaves of L. vulgaris.