Penstemon lemhiensis

(D. D. Keck) D. D. Keck & Cronquist

Brittonia 8: 248. 1957.

Common names: Lemhi beardtongue
Endemic
Basionym: Penstemon speciosus subsp. lemhiensis D. D. Keck Amer. Midl. Naturalist 23: 612. 1940
Treatment appears in FNA Volume 17. Treatment on page 172. Mentioned on page 159.

Stems ascending to erect, 25–80 cm, retrorsely hairy, not glaucous. Leaves basal and cauline, not leathery, retrorsely hairy, not glaucous; basal and proximal cauline (35–) 50–160 × (5–) 8–24 mm, blade oblanceolate to lanceolate, base tapered, margins entire, apex obtuse to acute; cauline 4–8 pairs, short-petiolate or sessile, 25–85 (–125) × 6–15 mm, blade elliptic to lanceolate, base tapered to truncate, apex acute, rarely obtuse. Thyrses interrupted or continuous, cylindric, 7–30 cm, axis retrorsely hairy proximally, mostly glandular-pubescent distally, verticillasters 3–7 (–9), cymes 2–8 (–10) -flowered, 2 per node; proximal bracts lanceolate, 18–95 × 5–20 mm; peduncles and pedicels retrorsely hairy. Flowers: calyx lobes ovate to lanceolate, (4.8–) 6–11 × 2.2–3.5 mm, margins erose, glabrous or sparsely glandular, sometimes also sparsely puberulent; corolla violet to blue, without nectar guides, ventricose, 25–35 mm, glabrous externally, glabrous internally, tube 7–10 mm, throat gradually inflated, not constricted at orifice, 7–11 mm diam., 2-ridged abaxially; stamens included, pollen-sacs divergent to nearly opposite, sigmoid, 1.8–2.2 mm, dehiscing incompletely, proximal 1/5–1/4 indehiscent, connective not splitting, sides sparsely hispid, hairs white, to 0.3 mm, sutures denticulate, teeth to 0.1 mm; staminode 14–16 mm, included, 0.7–0.8 mm diam., tip straight, glabrous; style (11–) 15–22 mm. Capsules 8–11 × 5–6 mm.


Phenology: Flowering Jun–Jul.
Habitat: Montane grasslands, sagebrush shrublands, pine and pine-fir woodlands.
Elevation: 1200–2500 m.

Discussion

Penstemon lemhiensis is known from the Central Rocky Mountains in east-central Idaho (Lemhi County) and southwestern Montana (Beaverhead, Deer Lodge, Ravalli, and Silver Bow counties).

Selected References

None.

Lower Taxa

None.

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

... more about "Penstemon lemhiensis"
Obtuse (?) +  and Acute (?) +
Craig C. Freeman +
(D. D. Keck) D. D. Keck & Cronquist +
glandular-pubescent +  and hairy +
alternate +, opposite +, whorled +, helical +  and subopposite +
tapered;truncate +
Penstemon speciosus subsp. lemhiensis +
elliptic;lanceolate +
Not (?) +  and Leathery (?) +
0.48 cm4.8 mm <br />0.0048 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
short-tubular +  and short-campanulate +
0.8 cm8 mm <br />0.008 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
sessile +  and short-petiolate +
8.5 cm85 mm <br />0.085 m <br /> (12.5 cm125 mm <br />0.125 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (8.5 cm85 mm <br />0.085 m <br />) +
Lemhi beardtongue +
not personate +, weakly bilabiate +  and strongly bilabiate +
violet +  and blue +
ventricose-ampliate +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
2-8(-10)-flowered +
scale-like +  and not needlelike +
Idaho +  and Mont. +
drupe-like +
1200–2500 m. +
curved +  and straight +
1 +  and 4 +
Montane grasslands, sagebrush shrublands, pine and pine-fir woodlands. +
0 cm0 mm <br />0 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
membranous +
terminal +  and axillary +
persistent +  and deciduous +
basal +  and cauline +
not glaucous +  and hairy +
not leathery +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
glutinous +
puberulent +, glandular +  and glabrous +
lacerate +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
spreading +, erect +  and ascending +
5 +  and 4 +
Flowering Jun–Jul. +
divergent +  and nearly opposite +
indehiscent +  and dehiscing +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
1/5 +  and 1/4 +
1.8 cm18 mm <br />0.018 m <br /> (9.5 cm95 mm <br />0.095 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
minute +
angled +  and angled-elongate +
papillate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (?) +  and 1.6 cm16 mm <br />0.016 m <br /> (?) +
short-petiolate +  and petiolate +
glutinous +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
Cauline (?) +, Proximal (?) +  and Basal (?) +
reduced +
25 cm250 mm <br />0.25 m <br /> (80 cm800 mm <br />0.8 m <br />) +
not +  and leathery +
1.1 cm11 mm <br />0.011 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
papillate +
denticulate +
Penstemon subg. Habroanthus +
Penstemon lemhiensis +
Penstemon sect. Glabri +
species +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
2-ridged +  and inflated +
not constricted +
continuous +  and interrupted +
cylindric +
7 cm70 mm <br />0.07 m <br /> (30 cm300 mm <br />0.3 m <br />) +
straight +
smooth +  and papillate +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
gibbous +  and not spurred +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
petiolate +  and sessile +
cauline +  and proximal +