Penstemon richardsonii

Douglas ex Lindley

Bot. Reg. 13: plate 1121. 1828.

Common names: Richardson’s beardtongue
Endemic
Treatment appears in FNA Volume 17. Treatment on page 241. Mentioned on page 229, 242.
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Subshrubs. Stems ascending to erect, 20–95 cm, retrorsely hairy, hairs pointed, not glaucous. Leaves cauline, opposite or subopposite, glabrate or retrorsely hairy, not glaucous; cauline 5–13 pairs, short-petiolate or sessile, 13–70 × 5–30 mm, blade ovate to lanceolate, base tapered, margins laciniate-dentate to irregularly laciniate-pinnatifid, apex obtuse to acute. Thyrses interrupted, cylindric, 2–25 (–48) cm, axis densely glandular-pubescent, verticillasters 3–7 (–15), cymes 2–7-flowered, 1 or 2 per node; proximal bracts lanceolate, 7–43 × 2–16 mm; peduncles and pedicels spreading, sparsely to densely glandular-pubescent. Flowers: calyx lobes ovate to lanceolate, 4–7 × 1.3–2.3 mm, glandular-pubescent; corolla bluish to lavender, or pinkish, with reddish purple nectar guides, ventricose-ampliate, 15–32 mm, glandular-pubescent externally, glabrous internally or sparsely to moderately white-lanate abaxially, tube 7–12 mm, throat gradually inflated, 5–14 mm diam., rounded abaxially; stamens: longer pair reaching orifice or exserted, filaments glabrous, pollen-sacs parallel, 1.3–2 mm, distal 1/2 indehiscent, sides glabrous, sutures denticulate, teeth to 0.2 mm; staminode 16–23 mm, exserted, 0.3–0.8 mm diam., glabrous or distal 2–8 mm sparsely lanate, hairs yellow, to 2 mm; style 11–23 mm. Capsules 5–9 × 4–5 mm. 2n = 16.

Discussion

Varieties 3 (3 in the flora).

Penstemon richardsonii consists of three weakly differentiated varieties that are partially sympatric on the eastern slope of the Cascade Range.

The Okanagan-Coville tribe of northeastern Washington and the Paiute tribe of the Great Basin region used Penstemon richardsonii as a drug plant to treat typhoid fever and as a dermatological aid (D. E. Moerman 1998).

Selected References

None.

Key

1 Corollas 15–20 mm; styles 11–15 mm; staminodes glabrous or sparsely hairy distally. Penstemon richardsonii var. curtiflorus
1 Corollas 22–32 mm; styles 16–23 mm; staminodes with distal 2–8 mm sparsely lanate, rarely glabrous. > 2
2 Leaf blades ovate to lanceolate (in outline), margins laciniate-dentate to irregularly laciniate-pinnatifid. Penstemon richardsonii var. richardsonii
2 Leaf blades ovate, sometimes lanceolate, margins dentate, rarely laciniate-dentate. Penstemon richardsonii var. dentatus

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

... more about "Penstemon richardsonii"
obtuse +  and acute +
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 +
ovate;lanceolate +
not +  and leathery +
glandular-pubescent +
ovate;lanceolate +
1.3mm;2.3mm +
short-tubular +  and short-campanulate +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
sessile +  and short-petiolate +
1.3 cm13 mm <br />0.013 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Richardson’s beardtongue +
not personate +  and bilabiate +
bluish +  and lavender or pinkish +
internally or +  and sparsely moderately white-lanate +
ventricose +
ventricose-ampliate +
1.5 cm15 mm <br />0.015 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
2-7-flowered +
2 +  and 1 +
scale-like +  and not needlelike +
B.C. +, Oreg. +  and Wash. +
drupe-like +
curved +  and straight +
1 +  and 4 +
not glaucous +
pointed +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
membranous +
terminal +  and axillary +
subopposite +  and opposite +
persistent +  and deciduous +
not glaucous +, hairy +  and glabrate +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
erose +  and entire +
ciliolate +, pubescent +, puberulent +, scabrous +, glandular-pubescent +  and glabrous +
laciniate-dentate +  and irregularly laciniate-pinnatifid +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
glandular-pubescent +
glandular-pubescent +
5 +  and 4 +
navicular-sigmoid +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (4.3 cm43 mm <br />0.043 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
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 />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
lanate +  and glabrous +
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 0.8 cm8 mm <br />0.008 m <br /> (?) +
subalternate +, alternate +, whorled +  and opposite +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
20 cm200 mm <br />0.2 m <br /> (95 cm950 mm <br />0.95 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
papillate +
denticulate +
Penstemon subg. Saccanthera +
Penstemon richardsonii +
Penstemon sect. Saccanthera +
species +
0.5 cm5 mm <br />0.005 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
rounded +  and inflated +
not constricted +
25 cm250 mm <br />0.25 m <br /> (48 cm480 mm <br />0.48 m <br />) +
cylindric +
2 cm20 mm <br />0.02 m <br /> (25 cm250 mm <br />0.25 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 +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +