familyPlantaginaceae
genusPenstemon
subgenusPenstemon subg. Penstemon
sectionPenstemon sect. Ambigui
speciesPenstemon ambiguus
varietyPenstemon ambiguus var. laevissimus

Penstemon ambiguus var. laevissimus

(D. D. Keck) N. H. Holmgren

Brittonia 31: 104. 1979.

Craig C. Freeman
Illustrated
Basionym: Penstemon ambiguus subsp. laevissimus D. D. Keck J. Wash. Acad. Sci. 29: 491. 1939
Treatment appears in FNA Volume 17. Treatment on page 95. Mentioned on page 96.
Please click on the illustration for a higher resolution version.
Illustrator: John Myers

Copyright: Flora of North America Association

Stems glabrous. Leaf-blades: margins glabrous or scabrous. 2n = 16.


Phenology: Flowering May–Aug(–Sep).
Habitat: Sandy soils, creosote bush, blackbrush, and sagebrush shrublands, juniper woodlands.
Elevation: 700–1800 m.

Distribution

Ariz., Nev., N.Mex., Tex., Utah, Mexico (Chihuahua)

Discussion

Selected References

None.

Lower Taxa

None.

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

... more about "Penstemon ambiguus var. laevissimus"
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2n chromosome quantity
16 +
Abaxial lobe quantity
3 +
Adaxial lobe quantity
2 +
Androecium position
hypogynous +
Apex shape
acuminate +  and mucronate +
Author
Craig C. Freeman +
Authority
(D. D. Keck) N. H. Holmgren +
Axis pubescence
scabrous +  and glabrous +
Basal leaf architecture
simple +
Basal leaf arrangement
alternate +, opposite +, whorled +, helical +  and subopposite +
Basionyms
Penstemon ambiguus subsp. laevissimus +
Blade arrangement or course or shape
linear +
Blade base shape
tapered +
Blade texture
not +  and leathery +
Bract presence
absent +
Bracteole size
smaller +
Calyx architecture or shape
symmetric +
Calyx lobe length
1.5mm;3.5mm +
Calyx lobe shape
ovate +
Calyx lobe width
1mm;1.5mm +
Calyx position relational
not surrounding +
Calyx shape
short-tubular +  and short-campanulate +
Capsule length
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Capsule pubescence
glabrous +
Capsule width
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Caudex architecture
rhizomelike +
Caudex growth form or texture
herbaceous +
Caudex texture
woody +
Cauline leaf architecture
sessile +
Connective architecture or dehiscence
not +  and splitting +
Connective arrangement
divergent +
Connective dehiscence
dehiscing +
Connective orientation
explanate +
Connective position
exserted +
Connective pubescence
glabrous +
Corolla architecture
lined +
Corolla architecture or shape
symmetric +
Corolla atypical some measurement
2.2 cm22 mm <br />0.022 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
Corolla coloration
pink +
Corolla pubescence
glandular-pubescent +
Corolla shape
salverform +
Corolla size
ventricose-ampliate +  and ampliate +
Corolla some measurement
1.6 cm16 mm <br />0.016 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
Cyme architecture
1-3-flowered +
Cyme quantity
2 +
Distal leaf-blade shape
scale-like +  and not needlelike +
Distribution
Ariz. +, Nev. +, N.Mex. +, Tex. +, Utah +  and Mexico (Chihuahua) +
Drupe shape
drupe-like +
Elevation
700–1800 m. +
Embryo course
curved +  and straight +
Endosperm presence
absent +
Filament position
exserted +
Filament pubescence
pubescent +, glandular-puberulent +  and glabrous +
Flower quantity
1 +  and 4 +
Flower reproduction
bisexual +
Fruits capsule arrangement
packed +
Fruits capsule dehiscence
septicidal +
Habitat
Sandy soils, creosote bush, blackbrush, and sagebrush shrublands, juniper woodlands. +
Hair coloration
white +
Hair texture
membranous +
Illustration
Present +
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 arrangement
opposite +
Leaf atypical length
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Leaf atypical quantity
7 (10) +
Leaf atypical width
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Leaf duration
persistent +  and deciduous +
Leaf length
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Leaf position
cauline +
Leaf pubescence
not glaucous +, scabrous +  and glabrous +
Leaf quantity
10 (?) +  and 25 (?) +
Leaf texture
not leathery +
Leaf width
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Line quantity
2 +
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
entire +
Margin pubescence
scabrous +  and glabrous +
Margin shape
toothed +  and entire +
Margin texture
scarious +
Nectar guide coloration
reddish purple +
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 spreading +
Pedicel presence
absent +
Pedicel pubescence
scabrous +  and glabrous +
Peduncle orientation
ascending;spreading +
Peduncle pubescence
scabrous +  and glabrous +
Perianth position
hypogynous +
Petal fusion
connate +
Petal presence
absent +
Petal quantity
5 +  and 4 +
Petiole presence
absent +
Phenology
Flowering May–Aug(–Sep). +
Pistil architecture
2-carpellate +
Pistil quantity
1 +
Pollen-sac architecture or shape
saccate +
Pollen-sac course or shape
navicular-sigmoid +
Pollen-sac dehiscence
dehiscing +
Pollen-sac distance
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Pollen-sac orientation
explanate +
Pollen-sac position
exserted +
Pollen-sac pubescence
glabrous +
Pollen-sac shape
navicular +
Proximal bract arrangement or course or shape
linear +
Proximal bract atypical length
2.7 cm27 mm <br />0.027 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
Proximal bract length
0.6 cm6 mm <br />0.006 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
Proximal bract width
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Publication title
Brittonia +
Publication year
1979 +
Reference
None +
Rim presence
absent +
Rim size
minute +
Seed atypical quantity
40 (100) +
Seed coloration
dark-brown +  and reddish-brown +
Seed quantity
5;40 +
Seed shape
angled +
Seed some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
Sepal atypical quantity
2 (4) +
Sepal fusion
connate +
Sepal quantity
5 +
Side architecture or dehiscence
splitting +
Side arrangement
divergent +
Side dehiscence
dehiscing +
Side orientation
explanate +
Side position
exserted +
Side pubescence
glabrous +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V17/V17 257.xml +
Special status
Illustrated +
Species growth form
shrubby +
Stamen architecture
didynamous +
Stamen atypical quantity
1 (3) +
Stamen fusion
adnate +
Stamen length or size
longer +
Stamen position
included +
Stamen pubescence
glabrous +
Stamen quantity
4 +
Staminode diameter
0.1 cm1 mm <br />0.001 m <br /> (?) +
Staminode position
included +
Staminode presence
absent +
Staminode quantity
1 +
Staminode shape
flattened +  and terete +
Staminode some measurement
0.7 cm7 mm <br />0.007 m <br /> (?) +  and 0.9 cm9 mm <br />0.009 m <br /> (?) +
Staminode variability
equal +
Stem architecture or function or pubescence
glandular +
Stem arrangement
subalternate +, alternate +, whorled +  and opposite +
Stem atypical some measurement
40 cm400 mm <br />0.4 m <br /> (60 cm600 mm <br />0.6 m <br />) +
Stem growth form
climbing +  and scrambling +
Stem growth form or orientation
sprawling +, creeping +  and prostrate +
Stem orientation
decumbent;ascending;decumbent;ascending;erect;prostrate +
Stem position
basal +
Stem presence
absent +
Stem pubescence
glabrous +
Stem some measurement
30 cm300 mm <br />0.3 m <br /> (40 cm400 mm <br />0.4 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
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Suture architecture or pubescence or relief
smooth +
Suture relief
papillate +
Suture shape
denticulate +
Taxon family
Plantaginaceae +
Taxon name
Penstemon ambiguus var. laevissimus +
Taxon parent
Penstemon ambiguus +
Taxon rank
variety +
Throat diameter
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Throat shape
rounded +  and inflated +
Throat size
not constricted +
Thyrse architecture
interrupted +
Thyrse shape
cylindric +  and conic +
Thyrse some measurement
6 cm60 mm <br />0.06 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Tip course
straight +
Tip pubescence
glabrous +
Tube base shape
gibbous +  and not spurred +
Tube some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Verticillaster quantity
6 (10) +
Volume
Volume 17 +
Whole organism duration
perennial +
Whole organism growth form
subshrub +
Whole organism nutrition
autotrophic +
Whole organism texture
fleshy +
Wing presence
absent +
Wing quantity
8 +
Wing size or width
narrow +