Penstemon sepalulus

A. Nelson in J. M. Coulter and A. Nelson

New Man. Bot. Rocky Mt., 449. 1909.

Common names: Little-cup beardtongue
Endemic
Basionym: Penstemon azureus var. ambiguus A. Gray in A. Gray et al. Syn. Fl. N. Amer. 2(1): 272. 1878
Treatment appears in FNA Volume 17. Treatment on page 243. Mentioned on page 230, 244.

Herbs or subshrubs. Stems ascending to erect, 40–90 cm, glabrous, glaucous. Leaves cauline, opposite, glabrous, glaucous; cauline 6–14 pairs, sessile, 30–85 (–102) × 3–13 mm, blade elliptic, base tapered, margins entire, apex acute. Thyrses interrupted, cylindric, 6–30 cm, axis glabrous, verticillasters (5–) 8–14, cymes 1 (or 2) -flowered, 2 per node; proximal bracts narrowly elliptic to linear, 8–45 × 1–8 mm; peduncles and pedicels ascending to erect, glabrous. Flowers: calyx lobes obovate to ovate or elliptic, 1.8–3.2 × 1.5–2.2 mm, glabrous or minutely ciliolate distally; corolla light lavender to violet or purple, with violet nectar guides, weakly ventricose, 22–26 (–28) mm, glabrous externally, glabrous internally, tube 7–9 mm, throat gradually inflated, 7–9 mm diam., 2-ridged abaxially; stamens included or longer pair exserted, filaments glabrous, pollen-sacs parallel to slightly divergent, 1.5–2 mm, distal 2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm; staminode 15–16 mm, included, 0.5–0.6 mm diam., glabrous; style 16–20 mm. Capsules 7–10 × 4.5–5.5 mm.


Phenology: Flowering Jun–Aug.
Habitat: Rocky to gravelly and talus slopes, Gambel oak, maple, and aspen woodlands.
Elevation: 1200–2300 m.

Discussion

Penstemon sepalulus is found in the Wasatch Mountains in Juab, Sevier, Utah, and Washington counties.

Selected References

None.

Lower Taxa

None.

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

... more about "Penstemon sepalulus"
Craig C. Freeman +
A. Nelson in J. M. Coulter and A. Nelson +
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 +
Penstemon azureus var. ambiguus +
linear;oblong;linear;oblong;elliptic;lanceolate;oblanceolate;spatulate;ovate;obovate +
not +  and leathery +
1.8mm;3.2mm +
ciliolate +  and glabrous +
obovate;ovate or elliptic +
1.5mm;2.2mm +
short-tubular +  and short-campanulate +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
8.5 cm85 mm <br />0.085 m <br /> (10.2 cm102 mm <br />0.102 m <br />) +
3 cm30 mm <br />0.03 m <br /> (8.5 cm85 mm <br />0.085 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Little-cup beardtongue +
not personate +  and bilabiate +
2.6 cm26 mm <br />0.026 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
light lavender +  and violet or purple +
ventricose +
ventricose-ampliate +  and ampliate +
2.2 cm22 mm <br />0.022 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
scale-like +  and not needlelike +
drupe-like +
1200–2300 m. +
curved +  and straight +
1 +  and 4 +
Rocky to gravelly and talus slopes, Gambel oak, maple, and aspen woodlands. +
0 cm0 mm <br />0 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
membranous +
terminal +  and axillary +
persistent +  and deciduous +
glaucous +  and glabrous +
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 +
ascending +  and erect +
ascending;erect +
5 +  and 4 +
Flowering Jun–Aug. +
parallel +  and slightly divergent +
navicular-sigmoid +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
narrowly elliptic;linear +
0.8 cm8 mm <br />0.008 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
New Man. Bot. Rocky Mt., +
minute +
brown +, gray +  and tan +
patelliform +  and angled +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
exserted +  and included +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (?) +  and 1.6 cm16 mm <br />0.016 m <br /> (?) +
subalternate +, alternate +, whorled +  and opposite +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
glaucous +  and glabrous +
40 cm400 mm <br />0.4 m <br /> (90 cm900 mm <br />0.9 m <br />) +
1.6 cm16 mm <br />0.016 m <br /> (2 cm20 mm <br />0.02 m <br />) +
papillate +
denticulate +
Penstemon subg. Saccanthera +
Penstemon sepalulus +
Penstemon sect. Saccanthera +
species +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
2-ridged +  and inflated +
not constricted +
cylindric +
6 cm60 mm <br />0.06 m <br /> (30 cm300 mm <br />0.3 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 +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
subshrub +  and herb +