Penstemon moffatii

Eastwood

Zoë 4: 9. 1893.

Common names: Moffat’s beardtongue
Endemic
Synonyms: Penstemon moffatii subsp. paysonii (Pennell) D. D. Keck
Treatment appears in FNA Volume 17. Treatment on page 140. Mentioned on page 126.

Stems ascending to erect, (3–) 7–30 cm, retrorsely hairy. Leaves basal and cauline, not leathery, retrorsely hairy; basal and proximal cauline petiolate, 15–45 (–65) × 3–20 (–25) mm, blade spatulate to oblanceolate or ovate, base tapered, margins entire or obscurely dentate distally, apex rounded to obtuse; cauline (1 or) 2–4 pairs, sessile, 16–55 × 4–10 (–15) mm, blade lanceolate to oblanceolate or linear, base tapered to clasping, margins entire or obscurely dentate distally, apex obtuse to acute. Thyrses continuous to ± interrupted, cylindric, 1–12 cm, axis glandular-pubescent, verticillasters (1–) 3–7, cymes (1 or) 2–4-flowered, 2 per node; proximal bracts ovate to lanceolate, 8–34 × 2–16 mm; peduncles and pedicels glandular-pubescent. Flowers: calyx lobes lanceolate, 4.8–6.2 × 1.2–1.9 mm, glandular-pubescent; corolla blue to violet, with reddish violet nectar guides, bilabiate, tubular-funnelform, 15–20 (–22) mm, sparsely white-lanate or glabrous internally abaxially, tube 4–6 mm, throat gradually inflated, not constricted at orifice, 4–7 mm diam., rounded abaxially; stamens included, pollen-sacs opposite, navicular, 1.1–1.4 mm, dehiscing completely, sutures papillate; staminode 7–9 mm, included or reaching orifice, 0.3–0.5 mm diam., tip straight to recurved, distal 4–5 mm sparsely pubescent, hairs yellow, to 0.8 mm; style 10–12 mm. Capsules 6–10 × 4–6 mm.


Phenology: Flowering Apr–Jun.
Habitat: Shale or gravelly mesas and slopes, sagebrush shrublands, pinyon-juniper woodlands.
Elevation: 1300–2000 m.

Discussion

Penstemon moffatii is known from Delta, Grand, Mesa, and Montrose counties, Colorado, and Garfield, Grand, and Wayne counties, Utah. Plants with oblanceolate basal leaves and sessile cauline leaves from Montrose County, Colorado, have been distinguished as subsp. paysonii. Plants with these characteristics are found sporadically throughout the range of P. moffatii, sometimes in populations with plants referable to subsp. moffatii.

Selected References

None.

Lower Taxa

None.

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

... more about "Penstemon moffatii"
obtuse +  and acute +
Craig C. Freeman +
Eastwood +
glandular-pubescent +
alternate +, opposite +, whorled +, helical +  and subopposite +
tapered;tapered +
Penstemon +
lanceolate;oblanceolate or linear +
not +  and leathery +
4.8mm;6.2mm +
glandular-pubescent +
1.2mm;1.9mm +
short-tubular +  and short-campanulate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
glandular-pubescent +  and glabrous +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1.6 cm16 mm <br />0.016 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Moffat’s beardtongue +
2 cm20 mm <br />0.02 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
blue +  and violet +
glabrous +  and white-lanate +
tubular-funnelform +
ampliate +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2-4-flowered +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
scale-like +  and not needlelike +
Colo. +  and Utah. +
drupe-like +
1300–2000 m. +
curved +  and straight +
1 +  and 4 +
Shale or gravelly mesas and slopes, sagebrush shrublands, pinyon-juniper woodlands. +
0 cm0 mm <br />0 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
membranous +
terminal +  and axillary +
short-petiolate +, sessile +  and petiolate +
whorled +  and opposite +
persistent +  and deciduous +
basal +  and cauline +
not leathery +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
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 Apr–Jun. +
navicular-sigmoid +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
1/5 +  and 1/2 +
0.8 cm8 mm <br />0.008 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
ovate +  and lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
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 />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
reaching orifice +  and included +
0.7 cm7 mm <br />0.007 m <br /> (?) +  and 0.9 cm9 mm <br />0.009 m <br /> (?) +
subalternate +, alternate +, whorled +  and opposite +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
7 cm70 mm <br />0.07 m <br /> (30 cm300 mm <br />0.3 m <br />) +
glandular-pubescent +  and glabrous +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
papillate +
denticulate +
Penstemon moffatii subsp. paysonii +
Penstemon moffatii +
Penstemon sect. Cristati +
species +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
rounded +  and inflated +
not constricted +
continuous +  and more or less interrupted +
cylindric +
1 cm10 mm <br />0.01 m <br /> (12 cm120 mm <br />0.12 m <br />) +
straight +
gibbous +  and not spurred +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
cauline +  and proximal +
acaulescent +  and caulescent +