Flora of North America species comparison

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Penstemon davidsonii var. davidsonii
Photo is of parent taxon

Davidson's beardtongue, Davidson's penstemon
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.

Penstemon davidsonii var. davidsonii
Phenology Flowering May.
Habitat Rock outcrops, talus slopes.
Elevation 900–3700 m. (3000–12100 ft.)
Distribution
from FNA
CA; NV; OR; WA; BC
[BONAP county map]
Discussion

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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 87.
Parent taxa Plantaginaceae > Penstemon > subg. Dasanthera > sect. Erianthera > Penstemon davidsonii
Sibling taxa
P. davidsonii var. menziesii, P. davidsonii var. praeteritus
Name authority unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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