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.

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 +