click thumbnail(s) to enlarge

Penstemon Schmidel [210]
C.A.J.A. Oudemans, Neerl. Pl.-tuin, vol. 3 : t. 39 (1867) [20]
Illustration contributed by:
University of Illinois Urbana-Champaign, U.S.A.

Scrophulariaceae
C.A.J.A. Oudemans, Neerl. Pl.-tuin, vol. 3 : t. 39 (1867)