Penstemon breviculus

(D. D. Keck) G. T. Nisbet & R. C. Jackson

Univ. Kansas Sci. Bull. 41: 734. 1960.

Common names: Short-stem beardtongue
Endemic
Basionym: Penstemon jamesii subsp. breviculus D. D. Keck Bull. Torrey Bot. Club 65: 241. 1938
Treatment appears in FNA Volume 17. Treatment on page 130. Mentioned on page 127, 131, 142.

Stems ascending to erect, 8–20 (–35) cm, retrorsely hairy. Leaves basal and cauline, not leathery, retrorsely hairy, sometimes glabrate; basal and proximal cauline petiolate, 35–95 × 3–18 mm, blade oblanceolate to lanceolate or linear, base tapered, margins entire or obscurely dentate, rarely prominently dentate distally, apex rounded to obtuse or acute; cauline (1 or) 2–5 pairs, short-petiolate or sessile, 33–78 × 4–10 mm, blade elliptic to oblanceolate, lanceolate or linear, base tapered to clasping, margins entire or dentate, apex obtuse to acute. Thyrses continuous or ± interrupted, cylindric, 4–11 (–18) cm, axis glandular-pubescent, verticillasters 3–5, cymes (1 or) 2–6-flowered, 2 per node; proximal bracts lanceolate to linear, 16–38 × 2–8 mm; peduncles and pedicels glandular-pubescent. Flowers: calyx lobes lanceolate, 4.5–7.5 × 1.2–2 mm, glandular-pubescent; corolla dark blue to violet or purple, with reddish violet nectar guides, ampliate, 10–15 (–18) mm, yellowish or whitish villous internally abaxially, tube 5–6 mm, throat abruptly inflated, ± constricted at orifice, 3.5–6 mm diam., rounded abaxially; stamens included, pollen-sacs opposite, explanate, 0.6–1 mm, dehiscing completely, sutures smooth; staminode 7–8 mm, reaching orifice or exserted, 0.3–0.4 mm diam., tip straight to recurved, distal 5–6 mm densely pubescent, hairs orangish yellow, to 1.5 mm, and medial hairs shorter, stiffer, and retrorse; style 9–11 mm. Capsules 6–9 × 4.5–6 mm. 2n = 16.


Phenology: Flowering May–Jun.
Habitat: Sandy or clayey soils, sagebrush shrublands, pinyon-juniper woodlands, desert grasslands.
Elevation: 1500–2000 m.

Distribution

Ariz., Colo., N.Mex., Utah.

Discussion

Penstemon breviculus is known from the Four Corners region. Populations have been documented in Arizona (Apache County), Colorado (Montezuma, Montrose, and San Miguel counties), New Mexico (McKinley and San Juan counties), and Utah (Grand, San Juan, and Wayne counties).

Selected References

None.

Lower Taxa

None.

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

... more about "Penstemon breviculus"
obtuse +  and acute +
Craig C. Freeman +
(D. D. Keck) G. T. Nisbet & R. C. Jackson +
glandular-pubescent +
alternate +, opposite +, whorled +, helical +  and subopposite +
tapered;tapered +
Penstemon jamesii subsp. breviculus +
elliptic;oblanceolate lanceolate or linear +
not +  and leathery +
4.5mm;7.5mm +
glandular-pubescent +
short-tubular +  and short-campanulate +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
glandular-pubescent +  and glabrous +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
sessile +  and short-petiolate +
3.3 cm33 mm <br />0.033 m <br /> (7.8 cm78 mm <br />0.078 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Short-stem beardtongue +
not personate +, rarely nearly radially symmetric +  and weakly strongly bilabiate +
1.5 cm15 mm <br />0.015 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
whitish +, yellowish +, dark blue +  and violet or purple +
ventricose +  and tubular-funnelform +
ampliate +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
2-6-flowered +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
scale-like +  and not needlelike +
Ariz. +, Colo. +, N.Mex. +  and Utah. +
drupe-like +
1500–2000 m. +
curved +  and straight +
1 +  and 4 +
Sandy or clayey soils, sagebrush shrublands, pinyon-juniper woodlands, desert grasslands. +
orangish yellow +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
membranous +
terminal +  and axillary +
short-petiolate +, sessile +  and petiolate +
whorled +  and opposite +
persistent +  and deciduous +
basal +  and cauline +
glabrate +  and hairy +
not leathery +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
dentate +  and entire +
glabrous +, puberulent +, hairy +, scabrous +, glandular-villous +  and glandular-pubescent +
toothed +  and entire +
scarious +  and herbaceous +
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 +
Flowering May–Jun. +
navicular-sigmoid +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
1/5 +  and 1/2 +
1.6 cm16 mm <br />0.016 m <br /> (3.8 cm38 mm <br />0.038 m <br />) +
lanceolate +  and linear +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Univ. Kansas Sci. Bull. +
minute +
black +, dark-brown +  and brown +
angled +  and reniform or slightly rounded +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (?) +  and 0.8 cm8 mm <br />0.008 m <br /> (?) +
subalternate +, alternate +, whorled +  and opposite +
20 cm200 mm <br />0.2 m <br /> (35 cm350 mm <br />0.35 m <br />) +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
8 cm80 mm <br />0.08 m <br /> (20 cm200 mm <br />0.2 m <br />) +
glandular-pubescent +  and glabrous +
0.9 cm9 mm <br />0.009 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
papillate +  and smooth +
denticulate +
Penstemon sect. Albidi +
Penstemon breviculus +
Penstemon sect. Cristati +
species +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
rounded +  and inflated +
constricted +
interrupted +  and continuous +
11 cm110 mm <br />0.11 m <br /> (18 cm180 mm <br />0.18 m <br />) +
cylindric +
4 cm40 mm <br />0.04 m <br /> (11 cm110 mm <br />0.11 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 />) +
cauline +  and proximal +
acaulescent +  and caulescent +