Penstemon rupicola (Piper) Howell
      
no HD illustration available (m3)
2 763966 Penstemon rupicola (Piper) Howell [80 763820 Penstemon newberryi var. rupicola Piper] Scrophulariaceae
W. Curtis, Bot. Mag., vol. 142 [ser. 4, vol. 12]: t. 8660 (1916) [M. Smith]