Penstemon cusickii

A. Gray

Proc. Amer. Acad. Arts 16: 106. 1880.

Common names: Cusick’s beardtongue
Endemic
Treatment appears in FNA Volume 17. Treatment on page 232. Mentioned on page 230.

Herbs or subshrubs. Stems ascending to erect, 15–45 cm, retrorsely hairy, hairs pointed, not glaucous. Leaves cauline, opposite or subalternate, retrorsely hairy, hairs pointed, not glaucous; cauline 4–8 pairs, short-petiolate or sessile, 16–70 × 1–8 (–14) mm, blade lanceolate to linear, base tapered, margins entire, apex obtuse to acute. Thyrses interrupted, cylindric, 4–15 cm, axis puberulent or retrorsely hairy, verticillasters 3–10, cymes 1–5 (–7) -flowered, 2 per node; proximal bracts lanceolate to linear, 7–50 × 1–6 mm; peduncles and pedicels ascending to erect, puberulent or retrorsely hairy. Flowers: calyx lobes ovate, 3–5.5 × 1.4–2.3 mm, glabrous or sparsely puberulent; corolla blue to violet or purple, without nectar guides, ampliate, 16–21 mm, glabrous externally, glabrous internally, tube 4–5 mm, throat gradually inflated, 5–6 mm diam., slightly 2-ridged abaxially; stamens included, filaments glabrous, pollen-sacs parallel, 1–1.5 (–1.8) mm, distal 1/2–2/3 indehiscent, sides hispidulous, hairs white, to 0.1 mm near filament attachment, sutures denticulate, teeth to 0.1 mm; staminode 10–12 mm, reaching orifice or barely exserted, 0.5–0.7 mm diam., glabrous; style 11–13 mm. Capsules 6–7 × 4.5–6 mm. 2n = 16.


Phenology: Flowering May–Jul.
Habitat: Rocky, often basaltic, sagebrush shrublands.
Elevation: 600–1500 m.

Discussion

Penstemon cusickii is known from west-central and southwestern Idaho (Ada, Blaine, Canyon, Elmore, Gem, Owyhee, and Washington counties) and eastern Oregon (Baker, Grant, Harney, Malheur, Union, and Wheeler counties).

Selected References

None.

Lower Taxa

None.

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

... more about "Penstemon cusickii"
obtuse +  and acute +
Craig C. Freeman +
A. Gray +
hairy +  and puberulent +
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 +
lanceolate;linear +
not +  and leathery +
puberulent +  and glabrous +
1.4mm;2.3mm +
short-tubular +  and short-campanulate +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
sessile +  and short-petiolate +
0.8 cm8 mm <br />0.008 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
1.6 cm16 mm <br />0.016 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Cusick’s beardtongue +
not personate +  and bilabiate +
blue +  and violet or purple +
ventricose +
ampliate +
1.6 cm16 mm <br />0.016 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
1-5(-7)-flowered +
scale-like +  and not needlelike +
Idaho +  and Oreg. +
drupe-like +
600–1500 m. +
curved +  and straight +
1 +  and 4 +
Rocky, often basaltic, sagebrush shrublands. +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
not glaucous +
pointed +
0 cm0 mm <br />0 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
membranous +
terminal +  and axillary +
subalternate +  and opposite +
persistent +  and deciduous +
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 +
hairy +  and puberulent +
ascending;erect +
hairy +  and puberulent +
5 +  and 4 +
Flowering May–Jul. +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
navicular-sigmoid +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
1/2 +  and 2/3 +
0.7 cm7 mm <br />0.007 m <br /> (5 cm50 mm <br />0.05 m <br />) +
lanceolate +  and linear +
0.1 cm1 mm <br />0.001 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Proc. Amer. Acad. Arts +
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 />) +
hispidulous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
1 cm10 mm <br />0.01 m <br /> (?) +  and 1.2 cm12 mm <br />0.012 m <br /> (?) +
subalternate +, alternate +, whorled +  and opposite +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
15 cm150 mm <br />0.15 m <br /> (45 cm450 mm <br />0.45 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
papillate +
denticulate +
Penstemon subg. Saccanthera +
Penstemon cusickii +
Penstemon sect. Saccanthera +
species +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2-ridged +  and inflated +
not constricted +
cylindric +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 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 +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
subshrub +  and herb +