Penstemon serrulatus Menzies

name cited:
Penstemon diffusus Douglas
name recognized:
Penstemon serrulatus Menzies

family: Scrophulariaceae
subfamily: Antirrhinoideae
tribe: Cheloneae

epithet cited: diffusus,-a,-um

epithet recognized:

Illustration contributed by:
Google Books

link to this page:
http://www.plantillustrations.org/illustration.php?id_illustration=410197