Penstemon davidsonii var. menziesii

(D. D. Keck) Cronquist in C. L. Hitchcock et al.

Vasc. Pl. Pacif. N.W. 4: 379. 1959.

Endemic
Basionyms: Penstemon davidsonii subsp. menziesii D. D. Keck Brittonia 8: 247. 1957
Synonyms: P. menziesii subsp. thompsonii Pennell & D. D. Keck
Treatment appears in FNA Volume 17. Treatment on page 87.

Leaf-blades spatulate to elliptic, margins ± serrulate, apex rounded to obtuse or acute. Flowers: corolla violet, 20–35 mm, moderately white-villous internally abaxially. 2n = 16.


Phenology: Flowering Jun–Aug.
Habitat: Rock outcrops, ledges, talus slopes.
Elevation: 30–2000 m.

Discussion

The ranges of var. davidsonii and var. menziesii overlap throughout much of British Columbia and Washington.

Selected References

None.

Lower Taxa

None.

"/3-3/4timescorollathroat" is not declared as a valid unit of measurement for this property.

white +  and lavender +
white-villous +  and glabrous +
2 cm20 mm <br />0.02 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
not glaucous +, puberulent +  and glabrous +
Craig C. Freeman +
(D. D. Keck) Cronquist in C. L. Hitchcock et al. +
glandular-pubescent +  and hairy +
alternate +, opposite +, whorled +, helical +  and subopposite +
tapered +
Penstemon davidsonii subsp. menziesii +
elliptic;orbiculate ovate or spatulate +
not +  and leathery +
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
glandular-pubescent +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.43 cm4.3 mm <br />0.0043 m <br />) +
short-tubular +  and short-campanulate +
0.8 cm8 mm <br />0.008 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
sessile +, short-petiolate +  and petiolate +
not +, personate +  and bilabiate +
white-villous +
ventricose-ampliate +  and ampliate +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
sessile +  and short-petiolate +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
scale-like +  and not needlelike +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
usually distinctly smaller +
0.4 cm4 mm <br />0.004 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
B.C. +, Oreg. +  and Wash. +
drupe-like +
30–2000 m. +
curved +  and straight +
1 +  and 4 +
Rock outcrops, ledges, talus slopes. +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
membranous +
terminal +  and axillary +
subopposite +  and opposite +
persistent +
not +, glaucous +, hairy +  and glabrous +
5 (?) +  and 10 (?) +
leathery +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
erose +  and entire +
glandular +, glabrous +  and glandular-pubescent +
toothed +  and entire +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
ascending +  and erect +
puberulent +  and glandular-pubescent +
puberulent +  and glandular-pubescent +
5 +  and 4 +
Flowering Jun–Aug. +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
round +  and ovate or lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Vasc. Pl. Pacif. N.W. +
minute +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (?) +  and 1.4 cm14 mm <br />0.014 m <br /> (?) +
subalternate +, alternate +, whorled +  and opposite +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
1.9 cm19 mm <br />0.019 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
P. menziesii subsp. thompsonii +
Penstemon davidsonii var. menziesii +
Penstemon davidsonii +
variety +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
2-ridged +  and inflated +
not constricted +
secund +  and continuous +
conic +  and cylindric +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
straight +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
gibbous +  and not spurred +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
subshrub +  and cespitose +