Penstemon ophianthus

Pennell

Contr. U.S. Natl. Herb. 20: 343. 1920.

Common names: Arizona beardtongue
Endemic
Synonyms: Penstemon jamesii subsp. ophianthus (Pennell) D. D. Keck
Treatment appears in FNA Volume 17. Treatment on page 141. Mentioned on page 127, 142.
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Stems ascending to erect, (10–) 13–36 (–40) cm, glabrous or sparsely retrorsely hairy proximally, sometimes also sparsely glandular-pubescent. Leaves basal and cauline, not leathery, glabrous or sparsely retrorsely hairy along midvein; basal and proximal cauline petiolate, 16–75 (–120) × 6–15 (–22) mm, blade oblanceolate, base tapered, margins entire or sinuate-dentate, apex obtuse to acute; cauline 2–4 pairs, short-petiolate or sessile, 25–105 × 2–12 mm, blade lanceolate to linear, base tapered, margins entire or sinuate-dentate to dentate, apex acute, rarely obtuse. Thyrses interrupted to compact, secund, 6–20 cm, axis densely glandular-pubescent, verticillasters 4–9, cymes (1–) 3–7-flowered, 2 per node; proximal bracts lanceolate, 12–70 × 2–8 mm; peduncles and pedicels glandular-pubescent. Flowers: calyx lobes lanceolate, 6–9 × 1.3–2.2 mm, glandular-pubescent; corolla lavender to violet, with deep violet nectar guides, ventricose-ampliate, 14–20 (–22) mm, moderately white-pilose and glandular-pubescent internally abaxially, tube 5–8 mm, throat abruptly inflated, not constricted at orifice, 7–11 mm diam., rounded abaxially; stamens included, pollen-sacs opposite, explanate, 0.8–1.2 mm, dehiscing completely, sutures smooth; staminode 11–13 mm, prominently exserted, 0.7–0.9 mm diam., tip recurved, distal 8–9 mm densely lanate, hairs yellow, to 2 mm, and medial hairs shorter, stiffer, and retrorse; style 11–13 mm. Capsules 6–11 × 5–6 mm.


Phenology: Flowering May–Jun.
Habitat: Sandy, gravelly, or clayey soils, sagebrush shrublands, pinyon-juniper and oak woodlands, ponderosa pine forests.
Elevation: 1500–2300 m.

Distribution

Ariz., Colo., N.Mex., Utah.

Discussion

Penstemon ophianthus is confused most often with P. jamesii and less often with P. breviculus.

Selected References

None.

Lower Taxa

None.

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

... more about "Penstemon ophianthus"
obtuse +  and acute +
Craig C. Freeman +
Pennell +
glandular-pubescent +
alternate +, opposite +, whorled +, helical +  and subopposite +
tapered;tapered +
Penstemon +
lanceolate;linear +
not +  and leathery +
glandular-pubescent +
1.3mm;2.2mm +
short-tubular +  and short-campanulate +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
glandular-pubescent +  and glabrous +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
sessile +  and short-petiolate +
2.5 cm25 mm <br />0.025 m <br /> (10.5 cm105 mm <br />0.105 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Arizona beardtongue +
not personate +, rarely nearly radially symmetric +  and weakly strongly bilabiate +
2 cm20 mm <br />0.02 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
lavender +  and violet +
glandular-pubescent +  and white-pilose +
ventricose +  and tubular-funnelform +
ventricose-ampliate +
1.4 cm14 mm <br />0.014 m <br /> (2 cm20 mm <br />0.02 m <br />) +
(1-)3-7-flowered +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
scale-like +  and not needlelike +
Ariz. +, Colo. +, N.Mex. +  and Utah. +
drupe-like +
1500–2300 m. +
curved +  and straight +
1 +  and 4 +
Sandy, gravelly, or clayey soils, sagebrush shrublands, pinyon-juniper and oak woodlands, ponderosa pine forests. +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
membranous +
terminal +  and axillary +
short-petiolate +, sessile +  and petiolate +
whorled +  and opposite +
persistent +  and deciduous +
basal +  and cauline +
hairy +  and glabrous +
not leathery +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
dentate +, sinuate-dentate +  and entire +
glabrous +, puberulent +, hairy +, scabrous +, glandular-villous +  and glandular-pubescent +
toothed +  and entire +
scarious +  and herbaceous +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
ascending +  and erect +
glandular-pubescent +
ascending;erect +
glandular-pubescent +
5 +  and 4 +
Flowering May–Jun. +
navicular-sigmoid +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
1/5 +  and 1/2 +
1.2 cm12 mm <br />0.012 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Contr. U.S. Natl. Herb. +
minute +
black +, dark-brown +  and brown +
angled +  and reniform or slightly rounded +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (?) +  and 1.3 cm13 mm <br />0.013 m <br /> (?) +
subalternate +, alternate +, whorled +  and opposite +
36 cm360 mm <br />0.36 m <br /> (40 cm400 mm <br />0.4 m <br />) +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
glandular-pubescent +, hairy +  and glabrous +
13 cm130 mm <br />0.13 m <br /> (36 cm360 mm <br />0.36 m <br />) +
glandular-pubescent +  and glabrous +
1.1 cm11 mm <br />0.011 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
papillate +  and smooth +
denticulate +
Penstemon jamesii subsp. ophianthus +
Penstemon ophianthus +
Penstemon sect. Cristati +
species +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
rounded +  and inflated +
not constricted +
secund +, interrupted +  and compact +
cylindric +
6 cm60 mm <br />0.06 m <br /> (20 cm200 mm <br />0.2 m <br />) +
straight +
gibbous +  and not spurred +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
cauline +  and proximal +
acaulescent +  and caulescent +