Penstemon flowersii

Neese & S. L. Welsh

Great Basin Naturalist 43: 429, fig. 1. 1983.

Common names: Flowers’s beardtongue
EndemicConservation concern
Treatment appears in FNA Volume 17. Treatment on page 118. Mentioned on page 111.

Stems ascending to erect, 8–25 (–32) cm, glabrous. Leaves essentially cauline, basal usually reduced or absent, glabrous; proximal cauline (15–) 20–55 × (4–) 10–25 mm, blade spatulate to lanceolate, base tapered, apex rounded to obtuse or acute; cauline 4–6 pairs, short-petiolate or sessile, 30–58 × 9–26 mm, blade ovate to elliptic or lanceolate, base tapered to clasping, apex obtuse to acute. Thyrses ± interrupted, cylindric, 8–14 cm, axis glabrous, verticillasters 4–9, cymes 1–5-flowered; proximal bracts ovate, 16–44 × 6–24 mm; peduncles and pedicels glabrous. Flowers: calyx lobes lanceolate, 5–6.5 × 1.9–3 mm, margins entire or erose, broadly scarious, glabrous; corolla pink, with rose-pink nectar guides, tubular-funnelform, 15–18 mm, glabrous externally, glabrous internally, tube 5–6 mm, throat gradually inflated, 4–5 mm diam., rounded abaxially; stamens included, pollen-sacs opposite, 1–1.2 mm, sutures smooth; staminode 8–9 mm, reaching orifice, 0.7–0.8 mm diam., tip recurved, distal 0.5–1.5 mm sparsely lanulose, hairs yellow, to 0.6 mm; style 14–16 mm. Capsules 7–10 × 5–8 mm.


Phenology: Flowering May–Jun.
Habitat: Shaley and clayey soils, shadscale shrublands.
Elevation: 1500–1600 m.

Discussion

Penstemon flowersii is known from a 200 square km area of the Duchesne River drainage between Myton and Randlett in Duchesne and Uintah counties. According to Neese and Welsh, plants grow on slopes and benches of the Uinta Formation.

Selected References

None.

Lower Taxa

None.

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

... more about "Penstemon flowersii"
obtuse +  and acute +
Craig C. Freeman +
Neese & S. L. Welsh +
glutinous +
alternate +, opposite +, whorled +, helical +  and subopposite +
tapered;tapered +
ovate;elliptic or lanceolate +
not +  and leathery +
short-tubular +  and short-campanulate +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
sessile +  and short-petiolate +
3 cm30 mm <br />0.03 m <br /> (5.8 cm58 mm <br />0.058 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
Flowers’s beardtongue +
not personate +  and bilabiate +
tubular-funnelform +
ampliate +
1.5 cm15 mm <br />0.015 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
1-5-flowered +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
scale-like +  and not needlelike +
drupe-like +
1500–1600 m. +
curved +  and straight +
1 +  and 4 +
Shaley and clayey soils, shadscale shrublands. +
0 cm0 mm <br />0 m <br /> (0.06 cm0.6 mm <br />6.0e-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 +
glutinous +
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 May–Jun. +
navicular-sigmoid +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
1.6 cm16 mm <br />0.016 m <br /> (4.4 cm44 mm <br />0.044 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
Great Basin Naturalist +
minute +
dark-brown +  and brown +
disciform +, angled-elongate +  and angled +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.54 cm5.4 mm <br />0.0054 m <br />) +
Endemic +  and Conservation concern +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
included +  and exserted +
0.8 cm8 mm <br />0.008 m <br /> (?) +  and 0.9 cm9 mm <br />0.009 m <br /> (?) +
short-petiolate +  and petiolate +
25 cm250 mm <br />0.25 m <br /> (32 cm320 mm <br />0.32 m <br />) +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
cauline +, proximal +  and basal +
reduced +
8 cm80 mm <br />0.08 m <br /> (25 cm250 mm <br />0.25 m <br />) +
leathery +
1.4 cm14 mm <br />0.014 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
papillate +
denticulate +
Penstemon flowersii +
Penstemon sect. Coerulei +
species +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
rounded +  and inflated +
not constricted +
cylindric +
8 cm80 mm <br />0.08 m <br /> (14 cm140 mm <br />0.14 m <br />) +
straight +
gibbous +  and not spurred +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
short-petiolate +  and sessile +