Penstemon compactus

(D. D. Keck) Crosswhite

Amer. Midl. Naturalist 77: 6. 1967.

Common names: Bear River Range beardtongue
EndemicConservation concern
Basionym: Penstemon cyananthus subsp. compactus D. D. Keck Amer. Midl. Naturalist 23: 615. 1940
Treatment appears in FNA Volume 17. Treatment on page 163. Mentioned on page 159, 160.

Stems decumbent to ascending, 8–26 cm, glabrous, not glaucous. Leaves basal and cauline, ± leathery or not, glabrous, not glaucous; basal and proximal cauline (15–) 20–110 × (3–) 6–14 (–25) mm, blade oblanceolate, base tapered, margins entire, apex obtuse to acute; cauline (1 or) 2 or 3 pairs, sessile or proximals short-petiolate, 13–55 × 5–14 mm, blade oblanceolate to lanceolate, base tapered, apex obtuse to acute. Thyrses continuous, cylindric to secund, 2–13 cm, axis glabrous or glandular-pubescent, verticillasters 2 or 3 (–5), cymes 1–7-flowered, 2 per node; proximal bracts lanceolate to oblong, 10–45 × 4–18 mm, apex acute; peduncles and pedicels glabrous or ± glandular-pubescent, peduncles to 7 mm, pedicels 1–4 mm. Flowers: calyx lobes lanceolate, 5.5–8 × 1.5–2 mm, margins erose, glabrous or ± glandular-pubescent; corolla blue to violet, without nectar guides, ventricose, 18–25 mm, glabrous externally, glabrous internally, tube 5–7 mm, throat gradually inflated, not constricted at orifice, 6–10 mm diam., 2-ridged abaxially; stamens: longer pair exserted, pollen-sacs divergent, navicular, 1.3–1.8 mm, dehiscing incompletely, proximal 1/3 indehiscent, connective not splitting, sides moderately pubescent to villous, hairs white, to 0.7 mm, sutures denticulate, teeth to 0.1 mm; staminode 10–12 mm, included, 0.5–0.6 mm diam., tip straight, glabrous or distal 1–3 mm sparsely pilose, hairs yellow or white, to 0.5 mm; style 14–17 mm. Capsules 5–7.5 × 4–5 mm. 2n = 16.


Phenology: Flowering Jun–Aug.
Habitat: Rocky, subalpine openings.
Elevation: 2000–2900 m.

Discussion

Penstemon compactus is found in the northern Wasatch Range in Franklin County, Idaho, and Cache County, Utah.

Selected References

None.

Lower Taxa

None.

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

... more about "Penstemon compactus"
acute +  and obtuse +
Craig C. Freeman +
(D. D. Keck) Crosswhite +
glandular-pubescent +  and glabrous +
alternate +, opposite +, whorled +, helical +  and subopposite +
tapered;tapered +
Penstemon cyananthus subsp. compactus +
oblanceolate;lanceolate +
not +  and leathery +
short-tubular +  and short-campanulate +
0.5 cm5 mm <br />0.005 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Bear River Range beardtongue +
not personate +, weakly bilabiate +  and strongly bilabiate +
blue +  and violet +
ventricose +
ventricose-ampliate +
1.8 cm18 mm <br />0.018 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
1-7-flowered +
scale-like +  and not needlelike +
Idaho +  and Utah. +
drupe-like +
2000–2900 m. +
curved +  and straight +
1 +  and 4 +
Rocky, subalpine openings. +
white +  and yellow +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
membranous +
terminal +  and axillary +
persistent +  and deciduous +
basal +  and cauline +
not glaucous +  and glabrous +
not +  and leathery +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
glutinous +
glandular-pubescent +  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 +
glandular-pubescent +  and glabrous +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
spreading;erect;ascending +
glandular-pubescent +  and glabrous +
0 cm0 mm <br />0 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
5 +  and 4 +
Flowering Jun–Aug. +
sigmoid +  and navicular-sigmoid +
indehiscent +  and dehiscing +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
short-petiolate +
1 cm10 mm <br />0.01 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
lanceolate +  and oblong +
0.4 cm4 mm <br />0.004 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Amer. Midl. Naturalist +
minute +
tan +  and brown or dark-brown +
angled +  and angled-elongate +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
moderately pubescent +  and villous +
papillate +
Endemic +  and Conservation concern +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
1 cm10 mm <br />0.01 m <br /> (?) +  and 1.2 cm12 mm <br />0.012 m <br /> (?) +
short-petiolate +  and petiolate +
glutinous +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
decumbent;ascending +
cauline +, proximal +  and basal +
not glaucous +  and glabrous +
reduced +
8 cm80 mm <br />0.08 m <br /> (26 cm260 mm <br />0.26 m <br />) +
not +  and leathery +
1.4 cm14 mm <br />0.014 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
papillate +
denticulate +
Penstemon subg. Habroanthus +
Penstemon compactus +
Penstemon sect. Glabri +
species +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2-ridged +  and inflated +
not constricted +
secund +  and continuous +
cylindric +
2 cm20 mm <br />0.02 m <br /> (13 cm130 mm <br />0.13 m <br />) +
straight +
pilose +  and glabrous +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
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 +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
petiolate +  and sessile +
cauline +  and proximal +