Flora of North America species comparison

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Penstemon davidsonii var. menziesii

Penstemon davidsonii var. davidsonii
Photo is of parent taxon

Davidson's beardtongue, Davidson's penstemon, Menzies' penstemon
Photo is of parent taxon

Davidson's beardtongue, Davidson's penstemon
Leaf

blades spatulate to elliptic, margins ± serrulate, apex rounded to obtuse or acute.

blades spatulate to orbiculate, margins entire, sometimes serrulate, apex rounded to obtuse.
Flowers

corolla violet, 20–35 mm, moderately white-villous internally abaxially.

corolla lavender or bluish lavender, violet, or purple, 20–36 mm, moderately white-villous internally abaxially.
2n

= 16.

= 16.

Penstemon davidsonii var. menziesii

Penstemon davidsonii var. davidsonii
Phenology Flowering Jun–Aug. Flowering May.
Habitat Rock outcrops, ledges, talus slopes. Rock outcrops, talus slopes.
Elevation 30–2000 m. (100–6600 ft.) 900–3700 m. (3000–12100 ft.)
Distribution
from FNA
OR; WA; BC
[BONAP county map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

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. FNA vol. 17, p. 87.
Parent taxa Plantaginaceae > Penstemon > subg. Dasanthera > sect. Erianthera > Penstemon davidsonii Plantaginaceae > Penstemon > subg. Dasanthera > sect. Erianthera > Penstemon davidsonii
Sibling taxa
P. davidsonii var. davidsonii, P. davidsonii var. praeteritus
P. davidsonii var. menziesii, P. davidsonii var. praeteritus
Synonyms P. davidsonii subsp. menziesii, P. menziesii subsp. thompsonii
Name authority (D. D. Keck) Cronquist: in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. 4: 379. (1959) 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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