Penstemon davidsonii var. davidsonii
Leaf-blades spatulate to orbiculate, margins entire, sometimes serrulate, apex rounded to obtuse. Flowers: corolla lavender or bluish lavender, violet, or purple, 20–36 mm, moderately white-villous internally abaxially. 2n = 16.
Phenology: Flowering May.
Habitat: Rock outcrops, talus slopes.
Elevation: 900–3700 m.
B.C., Calif., Nev., Oreg., Wash.
The ranges of var. davidsonii and var. menziesii overlap throughout much of British Columbia and Washington. Variety davidsonii hybridizes with var. menziesii, and with Penstemon cardwellii, P. fruticosus, P. newberryi, and P. rupicola.
"/3-3/4timescorollathroat" is not declared as a valid unit of measurement for this property.