Taxa: Penstemon barbatus (Penstemon barbatus var. coccineus), Penstemon barbatus ssp. barbatus (Penstemon barbatus var. puberulus), Penstemon barbatus ssp. torreyi (Penstemon barbatus var. torreyi, Penstemon torreyi), Penstemon barbatus ssp. trichander (Penstemon barbatus var. trichander), Penstemon barba
... (show all)tus var. barbatus