Penstemon glandulosus

Douglas ex Lindley

Edwards’s Bot. Reg. 15: plate 1262. 1829.

Common names: Sticky-stem beardtongue
IllustratedEndemic
Treatment appears in FNA Volume 17. Treatment on page 233. Mentioned on page 225, 229, 230, 234.

Herbs. Stems ascending to erect, (30–) 40–100 cm, viscid glandular-pubescent, not glaucous. Leaves basal and cauline, opposite, viscid glandular-pubescent, not glaucous; basal and proximal cauline 25–120 (–260) × 7–20 (–65) mm, blade elliptic to lanceolate, base tapered, margins entire, subentire, or irregularly serrate to dentate, apex acute to acuminate; cauline 4–10 pairs, sessile, 32–80 (–120) × 12–45 mm, blade ovate to obovate, elliptic, or lanceolate, base tapered to cordate-clasping, margins entire or subentire to irregularly serrate to dentate, apex obtuse to acute or acuminate. Thyrses interrupted, cylindric, (5–) 8–31 cm, axis viscid glandular-pubescent, verticillasters 3–7, cymes (1 or) 2–8-flowered, 2 per node; proximal bracts ovate, 18–60 × 11–44 mm; peduncles and pedicels ascending to erect, viscid glandular-pubescent. Flowers: calyx lobes lanceolate, 9–15 × 2.3–3.8 mm, viscid glandular-pubescent; corolla lavender to bluish lavender or purple, with dark violet nectar guides, ampliate, (28–) 30–40 mm, glandular-pubescent externally, sparsely to moderately white-pubescent internally abaxially, tube 9–11 mm, throat gradually inflated, 12–15 mm diam., rounded abaxially; stamens included, filaments glabrous, pollen-sacs parallel, 1.6–2.2 mm, distal 1/2 indehiscent, sides glabrous, sutures denticulate, teeth to 0.2 mm; staminode 22–26 mm, exserted, 0.8–1 mm diam., glabrous, rarely distal 2–4 mm sparsely pubescent, hairs yellow, to 0.4 mm; style 20–26 mm. Capsules 9–13 × 5–6.5 mm.

Discussion

Varieties 2 (2 in the flora).

Two allopatric varieties of Penstemon glandulosus have been distinguished based on basal leaf morphology. Leaf margins occasionally vary from entire to serrate or dentate among individuals in some populations, but the general pattern of leaf variation does appear to be geographically correlated.

Selected References

None.

Key

1 Basal leaves: blade margins irregularly serrate to dentate. Penstemon glandulosus var. glandulosus
1 Basal leaves: blade margins entire or subentire. Penstemon glandulosus var. chelanensis

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

... more about "Penstemon glandulosus"
obtuse +  and acute or acuminate +
Craig C. Freeman +
Douglas ex Lindley +
glandular-pubescent +
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;tapered +
ovate;obovate elliptic or lanceolate +
not +  and leathery +
glandular-pubescent +
2.3mm;3.8mm +
short-tubular +  and short-campanulate +
0.9 cm9 mm <br />0.009 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
3.2 cm32 mm <br />0.032 m <br /> (8 cm80 mm <br />0.08 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
short-petiolate +, petiolate +  and sessile +
Sticky-stem beardtongue +
not personate +  and bilabiate +
2.8 cm28 mm <br />0.028 m <br /> (3 cm30 mm <br />0.03 m <br />) +
purple +  and bluish lavender +
white-pubescent +  and glandular-pubescent +
ventricose +
ampliate +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2-8-flowered +
scale-like +  and not needlelike +
Idaho +, Oreg. +  and Wash. +
drupe-like +
curved +  and straight +
1 +  and 4 +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0 cm0 mm <br />0 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
membranous +
terminal +  and axillary +
persistent +  and deciduous +
basal +  and cauline +
not glaucous +  and glandular-pubescent +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
erose +  and entire +
serrate +  and entire +
ciliolate +, pubescent +, puberulent +, scabrous +, glandular-pubescent +  and glabrous +
subentire +  and entire +
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 +
navicular-sigmoid +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
1.8 cm18 mm <br />0.018 m <br /> (6 cm60 mm <br />0.06 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (4.4 cm44 mm <br />0.044 m <br />) +
Edwards’s Bot. Reg. +
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 />) +
Illustrated +  and Endemic +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
2.2 cm22 mm <br />0.022 m <br /> (?) +  and 2.6 cm26 mm <br />0.026 m <br /> (?) +
subalternate +, alternate +, whorled +  and opposite +
30 cm300 mm <br />0.3 m <br /> (40 cm400 mm <br />0.4 m <br />) +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
not glaucous +  and glandular-pubescent +
40 cm400 mm <br />0.4 m <br /> (100 cm1,000 mm <br />1 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
papillate +
denticulate +
Penstemon subg. Saccanthera +
Penstemon glandulosus +
Penstemon sect. Saccanthera +
species +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
rounded +  and inflated +
not constricted +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
cylindric +
8 cm80 mm <br />0.08 m <br /> (31 cm310 mm <br />0.31 m <br />) +
straight +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
gibbous +  and not spurred +
0.9 cm9 mm <br />0.009 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
cauline +  and proximal +