Penstemon cardinalis subsp. cardinalis Woot. & Standl.  
Family: Plantaginaceae
Penstemon cardinalis subsp. cardinalis image
Patrick Alexander  
Penstemon cardinalis subsp. cardinalis
Penstemon cardinalis subsp. cardinalis image
Patrick Alexander  
Penstemon cardinalis subsp. cardinalis image
Patrick Alexander  
The National Science Foundation
This project made possible by National Science Foundation Award 1410069