familyPlantaginaceae
genusPenstemon
subgenusPenstemon subg. Dasanthera
sectionPenstemon sect. Erianthera
speciesPenstemon davidsonii
varietyPenstemon davidsonii var. davidsonii

Penstemon davidsonii var. davidsonii

Craig C. Freeman
Endemic
Treatment appears in FNA Volume 17. Treatment on page 87. Mentioned on page 88, 92.

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.

Distribution

B.C., Calif., Nev., Oreg., Wash.

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.

Selected References

None.

Lower Taxa

None.

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

... more about "Penstemon davidsonii var. davidsonii"
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2n chromosome quantity
16 +
Abaxial lobe quantity
3 +
Abaxial ridge architecture
personate +
Abaxial ridge coloration
white +  and lavender +
Abaxial ridge pubescence
white-villous +  and glabrous +
Abaxial ridge some measurement
2 cm20 mm <br />0.02 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
Adaxial lobe quantity
2 +
Androecium position
hypogynous +
Apex pubescence
not glaucous +, puberulent +  and glabrous +
Apex shape
rounded +  and obtuse +
Author
Craig C. Freeman +
Authority
Greene +
Axis pubescence
glandular-pubescent +  and hairy +
Basal leaf architecture
simple +
Basal leaf arrangement
alternate +, opposite +, whorled +, helical +  and subopposite +
Base shape
tapered +
Basionyms
Dasanthera +
Blade arrangement or course or shape
linear +
Blade shape
elliptic;orbiculate ovate or spatulate +
Blade texture
not +  and leathery +
Bract presence
absent +
Bracteole size
smaller +
Calyx architecture or shape
symmetric +
Calyx lobe atypical length
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Calyx lobe length
7mm;12mm +
Calyx lobe pubescence
glandular-pubescent +
Calyx lobe shape
lanceolate;linear +
Calyx lobe width
2.5mm;4.3mm +
Calyx position relational
not surrounding +
Calyx shape
short-tubular +  and short-campanulate +
Capsule length
0.8 cm8 mm <br />0.008 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Capsule pubescence
glabrous +
Capsule width
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Caudex architecture
rhizomelike +
Caudex growth form or texture
herbaceous +
Caudex texture
woody +
Cauline leaf architecture
sessile +, short-petiolate +  and petiolate +
Connective architecture or dehiscence
splitting +
Corolla architecture
not +, personate +  and bilabiate +
Corolla architecture or shape
symmetric +
Corolla coloration
purple +, violet +  and bluish lavender +
Corolla coloration or odor
lavender +
Corolla pubescence
white-villous +
Corolla shape
tubular-funnelform +
Corolla size
ventricose-ampliate +  and ampliate +
Corolla some measurement
2 cm20 mm <br />0.02 m <br /> (3.6 cm36 mm <br />0.036 m <br />) +
Cyme architecture
1-flowered +
Cyme quantity
2 +
Distal architecture
sessile +  and short-petiolate +
Distal atypical length
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Distal flower pubescence
villous +
Distal flower some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Distal leaf-blade shape
scale-like +  and not needlelike +
Distal length
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Distal size
usually distinctly smaller +
Distal width
0.4 cm4 mm <br />0.004 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Distribution
B.C. +, Calif. +, Nev. +, Oreg. +  and Wash. +
Drupe shape
drupe-like +
Elevation
900–3700 m. +
Embryo course
curved +  and straight +
Endosperm presence
absent +
Filament pubescence
glabrous +
Flower quantity
1 +  and 4 +
Flower reproduction
bisexual +
Fruits capsule arrangement
packed +
Fruits capsule dehiscence
septicidal +
Habitat
Rock outcrops, talus slopes. +
Hair coloration
whitish +
Hair some measurement
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Hair texture
membranous +
Illustration copyright
Flora of North America Association +
Illustrator
John Myers +
Inflorescence position
terminal +  and axillary +
Inflorescence position or structure subtype
terminal +
Lateral branch architecture
cymose +
Leaf-blade shape
spatulate;orbiculate +
Leaf arrangement
subopposite +  and opposite +
Leaf duration
persistent +
Leaf position
cauline +
Leaf pubescence
not +, glaucous +, hairy +  and glabrous +
Leaf quantity
5 (?) +  and 10 (?) +
Leaf texture
leathery +
Lobe quantity
5 (?) +
Lobe shape
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
Margin architecture
erose +  and entire +
Margin architecture or shape
serrulate +  and entire +
Margin pubescence
glandular +, glabrous +  and glandular-pubescent +
Margin shape
toothed +  and entire +
Margin texture
herbaceous +  and scarious +
Number of lower taxa
0 +
Ovary architecture or structure in adjective form
2-locular +
Ovary arrangement
axile +  and parietal +
Ovary placentation
axile +
Ovary position
basal +, apical +  and superior +
Ovule architecture
tenuinucellate +, unitegmic +  and hemitropous +
Ovule orientation
campylotropous +, hemianatropous +  and anatropous +
Panicle architecture
spiciform +
Pedicel orientation
ascending +  and erect +
Pedicel presence
absent +
Pedicel pubescence
puberulent +  and glandular-pubescent +
Peduncle orientation
ascending;erect +
Peduncle pubescence
puberulent +  and glandular-pubescent +
Perianth position
hypogynous +
Petal fusion
connate +
Petal presence
absent +
Petal quantity
5 +  and 4 +
Petiole presence
absent +
Phenology
Flowering May. +
Pistil architecture
2-carpellate +
Pistil quantity
1 +
Pollen-sac arrangement
opposite +
Pollen-sac dehiscence
dehiscing +
Pollen-sac distance
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
Pollen-sac orientation
explanate +
Proximal bract length
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Proximal bract shape
round +  and ovate or lanceolate +
Proximal bract width
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Publication title
Pittonia +
Publication year
1892 +
Reference
None +
Rim presence
absent +
Rim size
minute +
Seed atypical quantity
40 (100) +
Seed coloration
brown +
Seed quantity
5;40 +
Seed shape
angled +
Seed some measurement
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Sepal atypical quantity
2 (4) +
Sepal fusion
connate +
Sepal quantity
5 +
Side pubescence
lanate +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V17/V17 235.xml +
Special status
Endemic +
Species growth form
shrubby +
Stamen architecture
didynamous +
Stamen atypical quantity
1 (3) +
Stamen fusion
adnate +
Stamen length or size
longer +
Stamen position
included +
Stamen quantity
4 +
Staminode diameter
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
Staminode position
included +
Staminode presence
absent +
Staminode quantity
1 +
Staminode shape
flattened +
Staminode some measurement
0.7 cm7 mm <br />0.007 m <br /> (?) +  and 1.4 cm14 mm <br />0.014 m <br /> (?) +
Staminode variability
equal +
Stem architecture or function or pubescence
glandular +
Stem arrangement
subalternate +, alternate +, whorled +  and opposite +
Stem atypical some measurement
10 cm100 mm <br />0.1 m <br /> (17 cm170 mm <br />0.17 m <br />) +
Stem growth form
climbing +  and scrambling +
Stem growth form or orientation
sprawling +, creeping +  and prostrate +
Stem orientation
ascending;erect +
Stem position
basal +
Stem presence
absent +
Stem pubescence
not glaucous +, puberulent +  and hairy +
Stem some measurement
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Stigma architecture or shape
capitate +
Stigma quantity
1 +
Stipule presence
absent +
Style atypical quantity
0 (?) +
Style pubescence
glabrous +
Style quantity
1 +
Style some measurement
1.9 cm19 mm <br />0.019 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
Suture architecture or pubescence or relief
smooth +
Synonyms
Penstemon menziesii subsp. davidsonii +
Taxon family
Plantaginaceae +
Taxon name
Penstemon davidsonii var. davidsonii +
Taxon parent
Penstemon davidsonii +
Taxon rank
variety +
Throat diameter
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Throat shape
2-ridged +  and inflated +
Throat size
not constricted +
Thyrse architecture
secund +  and continuous +
Thyrse shape
conic +  and cylindric +
Thyrse some measurement
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Tip course
straight +
Tip orientation
recurved +
Tip pubescence
glabrous +
Tube atypical some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Tube base shape
gibbous +  and not spurred +
Tube some measurement
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Verticillaster quantity
2 (7) +
Volume
Volume 17 +
Whole organism duration
perennial +
Whole organism growth form
subshrub +  and cespitose +
Whole organism nutrition
autotrophic +
Whole organism texture
fleshy +
Wing presence
absent +
Wing quantity
8 +
Wing size or width
narrow +