Penstemon tiehmii

N. H. Holmgren

Brittonia 50: 159, fig. 1F–J. 1998.

Common names: Shoshone or Tiehm’s beardtongue
EndemicConservation concern
Treatment appears in FNA Volume 17. Treatment on page 244. Mentioned on page 230, 231.

Herbs. Stems ascending to erect, 6–20 cm, retrorsely hairy, hairs appressed, white, ± scalelike, not glaucous. Leaves cauline, opposite, retrorsely hairy, hairs white, scalelike, not glaucous; cauline 1–4 pairs, petiolate, 15–45 × 7–24 mm, blade ovate to spatulate or lanceolate, base tapered, margins entire, apex rounded to acute. Thyrses interrupted, cylindric, 2–7 cm, axis glandular-pubescent, sometimes also retrorsely hairy or appressed-hairy proximally, hairs white, scalelike, verticillasters 3 or 4 (–7), cymes (1 or) 2–5-flowered, 1 or 2 per node; proximal bracts lanceolate, 9–25 × 1–5 mm; peduncles and pedicels ascending, glandular-pubescent. Flowers: calyx lobes lanceolate, 4–4.8 × 1.4–2 mm, glandular-pubescent; corolla violet to lavender, without nectar guides, abaxial ridges usually white, weakly ventricose, 15–20 mm, glandular-pubescent externally, glabrous internally, tube 4–6 mm, throat gradually inflated, 4–5 mm diam., 2-ridged abaxially; stamens included or longer pair reaching orifice, filaments glabrous, pollen-sacs nearly parallel to divergent, 1.1–1.6 mm, distal 2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm; staminode 8–10 mm, exserted, 0.3–0.6 mm diam., glabrous or sparsely pilose, hairs yellow, to 0.2 mm; style 10–13 mm. Capsules 6–8 × 4–5 mm. 2n = 16.


Phenology: Flowering Jun–Aug.
Habitat: Sandy-loam soils, steep volcanic talus slopes.
Elevation: 2300–2900 m.

Discussion

Penstemon tiehmii is known only from Mount Lewis in the Shoshone Range in Lander County.

Selected References

None.

Lower Taxa

None.

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

... more about "Penstemon tiehmii"
glabrous +  and glandular-pubescent +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Rounded (?) +  and Acute (?) +
Craig C. Freeman +
N. H. Holmgren +
appressed-hairy +, hairy +  and glandular-pubescent +
subalternate +, whorled +, alternate +  and opposite +
alternate +, opposite +, whorled +, helical +  and subopposite +
cauline +, proximal +  and basal +
not +, glaucous +, glandular-pubescent +, hirsute +, pilose +, canescent +, hairy +, puberulent +, glabrate +  and glabrous +
tapered +
ovate;spatulate or lanceolate +
not +  and leathery +
0.4 cm4 mm <br />0.004 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
glandular-pubescent +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
short-tubular +  and short-campanulate +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
Shoshone or Tiehm’s beardtongue +
not personate +  and bilabiate +
violet +  and lavender +
hairy +, glabrous +, , +  and glandular-pubescent +
ventricose-ampliate +  and ampliate +
2-5-flowered +
2 +  and 1 +
scale-like +  and not needlelike +
drupe-like +
2300–2900 m. +
curved +  and straight +
1 +  and 4 +
Sandy-loam soils, steep volcanic talus slopes. +
yellow +  and white +
not glaucous +
scale-like +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
membranous +
terminal +  and axillary +
persistent +  and deciduous +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
erose +  and entire +
ciliolate +, pubescent +, puberulent +, scabrous +, glandular-pubescent +  and glabrous +
lacerate +, laciniate-pinnatifid +, toothed +  and entire +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
glandular-pubescent +
glandular-pubescent +
5 +  and 4 +
Flowering Jun–Aug. +
nearly parallel +  and divergent +
navicular-sigmoid +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
minute +
Brown (?) +, Gray (?) +  and Tan (?) +
patelliform +  and angled +
Endemic +  and Conservation concern +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
pilose +  and glabrous +
0.8 cm8 mm <br />0.008 m <br /> (?) +  and 1 cm10 mm <br />0.01 m <br /> (?) +
subalternate +, alternate +, whorled +  and opposite +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
6 cm60 mm <br />0.06 m <br /> (20 cm200 mm <br />0.2 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
papillate +
denticulate +
Penstemon subg. Saccanthera +
Penstemon tiehmii +
Penstemon sect. Saccanthera +
species +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2-ridged +  and inflated +
not constricted +
cylindric +
2 cm20 mm <br />0.02 m <br /> (7 cm70 mm <br />0.07 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 +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +