Penstemon centranthifolius (Benth.) Benth.
no HD illustration available (m1)
Penstemon centranthifolius (Benth.) Benth. [ Chelone centranthifolia Benth.] [Scrophulariaceae]
W. Curtis, Bot. Mag., vol. 85 [ser. 3, vol. 15]: t. 5142 (1859) [W.H. Fitch]