Penstemon stephensii

Brandegee

Zoë 5: 151. 1903.

Common names: Stephens’s beardtongue
EndemicConservation concern
Treatment appears in FNA Volume 17. Treatment on page 255. Mentioned on page 245, 247.
Revision as of 18:19, 29 July 2020 by imported>Volume Importer
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Herbs. Stems ascending to erect, 30–150 cm, glaucous, sometimes not. Leaves: basal and proximal cauline 35–80 × 18–30 mm, blade spatulate to ovate or elliptic, base tapered, margins coarsely serrate to coarsely dentate, apex rounded to acute; cauline 4–7 pairs, sessile, 18–80 × 10–40 mm, blade ovate-oblong to triangular-ovate, base connate-perfoliate, margins finely serrate, apex obtuse to acute or acuminate. Thyrses interrupted, secund, 16–45 cm, axis glabrous or sparsely glandular-pubescent distally, verticillasters 8–14, cymes 2–6-flowered; proximal bracts depressed-ovate to ovate or triangular, 12–50 × 15–55 mm; peduncles and pedicels erect, sparsely glandular-pubescent. Flowers: calyx lobes ovate, 3–4.2 (–5) × 1.5–2.5 mm, glandular-pubescent; corolla rose to magenta or pinkish lavender, without nectar guides, bilabiate, funnelform to slightly ventricose, 16–20 mm, glandular-pubescent externally, glandular-pubescent internally, tube 5–6 mm, length 1.7–2 times calyx lobes, throat gradually inflated, not constricted at orifice, 4–6 mm diam., rounded abaxially; stamens included, filaments glabrous, pollen-sacs explanate, 1.1–1.5 mm, sutures smooth; staminode 9–13 mm, included, 0.2–0.3 mm diam., tip straight, glabrous; style 10–12 mm, glabrous. Capsules 7–10 × 4–6 mm, glabrous.


Phenology: Flowering Apr–Jun.
Habitat: Rocky slopes, washes, rock crevices, creosote shrublands, pinyon-juniper woodlands.
Elevation: 1200–1700 m.

Discussion

Penstemon stephensii is known from the Granite, Kingston, Nopah, and Providence ranges in Inyo and San Bernardino counties.

Selected References

None.

Lower Taxa

None.

"/4+timescorollathroat" is not declared as a valid unit of measurement for this property."-2timescalyxlobes" is not declared as a valid unit of measurement for this property.

... more about "Penstemon stephensii"
obtuse +  and acute or acuminate +
Craig C. Freeman +
Brandegee +
glandular-pubescent +  and glabrous +
alternate +, opposite +, whorled +, helical +  and subopposite +
connate-perfoliate +
tapered +
ovate-oblong;triangular-ovate +
not +  and leathery +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
glandular-pubescent +
1.5mm;2.5mm +
short-tubular +  and short-campanulate +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
1.8 cm18 mm <br />0.018 m <br /> (8 cm80 mm <br />0.08 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Stephens’s beardtongue +
rose +  and magenta or pinkish lavender +
glandular-pubescent +
ventricose +
ventricose-ampliate +
1.6 cm16 mm <br />0.016 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2-6-flowered +
scale-like +  and not needlelike +
drupe-like +
1200–1700 m. +
curved +  and straight +
1 +  and 4 +
Rocky slopes, washes, rock crevices, creosote shrublands, pinyon-juniper woodlands. +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
membranous +
terminal +  and axillary +
persistent +  and deciduous +
3.5 cm35 mm <br />0.035 m <br /> (8 cm80 mm <br />0.08 m <br />) +
cauline +, proximal +  and basal +
glaucous +  and glabrous +
leathery +
1.8 cm18 mm <br />0.018 m <br /> (3 cm30 mm <br />0.03 m <br />) +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
erose +  and entire +
serrate +  and dentate +
glandular-pubescent +  and glabrous +
denticulate +, toothed +  and entire +
serrate to coarsely +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
glandular-pubescent +
glandular-pubescent +
5 +  and 4 +
Flowering Apr–Jun. +
divergent +  and opposite +
navicular-sigmoid +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
denticulate +  and navicular +
1.2 cm12 mm <br />0.012 m <br /> (5 cm50 mm <br />0.05 m <br />) +
depressed-ovate +  and ovate or triangular +
1.5 cm15 mm <br />0.015 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
minute +
brown +  and dark-brown or black +
rounded +  and angled +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Endemic +  and Conservation concern +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (?) +  and 1.3 cm13 mm <br />0.013 m <br /> (?) +
subalternate +, alternate +, whorled +  and opposite +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
30 cm300 mm <br />0.3 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
papillate +
denticulate +
Penstemon stephensii +
Penstemon sect. Spectabiles +
species +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
rounded +  and inflated +
not constricted +
secund +  and interrupted +
cylindric +
16 cm160 mm <br />0.16 m <br /> (45 cm450 mm <br />0.45 m <br />) +
straight +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
gibbous +  and not spurred +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +