Penstemon alamosensis

Pennell & G. T. Nisbet

Univ. Kansas Sci. Bull. 41: 709, figs. 41, 43, 45. 1960.

Common names: Alamo beardtongue
Endemic
Treatment appears in FNA Volume 17. Treatment on page 151. Mentioned on page 150, 155, 246.

Stems ascending to erect, 14–120 cm, sometimes glaucous. Leaves not leathery, glabrous, sometimes glaucous; basal and proximal cauline 25–140 × 9–45 mm, blade elliptic to obovate or lanceolate, base tapered, margins entire, apex obtuse to acute; cauline 2–6 pairs, sessile or proximals short-petiolate, 10–135 × 3–30 mm, blade oblong to oblanceolate or lanceolate, base tapered to truncate, margins entire, apex obtuse to acute. Thyrses interrupted, cylindric to ± secund, 12–34 (–90) cm, axis glabrous, verticillasters 5–15 (–30), cymes (1 or) 2 (–4) -flowered; proximal bracts lanceolate to subulate, 4–15 × 1–5 mm; peduncles and pedicels ascending to erect, peduncles glabrous, pedicels glabrous or sparsely glandular-pubescent. Flowers: calyx lobes lanceolate, 3–4.5 × 1–1.5 mm, margins entire, sparsely glandular-pubescent; corolla red to orangish red, without nectar guides, nearly radially symmetric, weakly bilabiate, tubular-funnelform, 19–25 mm, glandular-pubescent externally, glandular-pubescent internally abaxially, tube 6–8 mm, throat gradually inflated, 5–7 mm diam., rounded abaxially; stamens included, pollen-sacs explanate, 1–1.4 mm, sutures smooth; staminode 7–9 mm, flattened distally, 0.3–0.5 mm diam., tip straight to recurved, glabrous; style 9–11 mm. Capsules 11–16 × 5–8 mm. 2n = 16.


Phenology: Flowering Apr–Jun.
Habitat: Limestone canyons, cliffs, and slopes.
Elevation: 1300–1600 m.

Discussion

Penstemon alamosensis is known from the Sacramento and San Andres mountains in New Mexico (Doña Ana, Lincoln, and Otero counties) and in the Hueco Mountains in western Texas (El Paso County).

Selected References

None.

Lower Taxa

None.

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

... more about "Penstemon alamosensis"
obtuse +  and acute +
Craig C. Freeman +
Pennell & G. T. Nisbet +
alternate +, opposite +, whorled +, helical +  and subopposite +
tapered to truncate;tapered +
oblong;oblanceolate or lanceolate +
not +  and leathery +
erose +  and entire +
glandular-pubescent +, glandular +  and glabrous +
short-tubular +  and short-campanulate +
1.1 cm11 mm <br />0.011 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
short-petiolate +  and sessile +
Alamo beardtongue +
red +  and orangish red +
glandular-pubescent +
tubular-funnelform +
ventricose-ampliate +  and ampliate +
1.9 cm19 mm <br />0.019 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
2(-4)-flowered +
scale-like +  and not needlelike +
N.Mex. +  and Tex. +
drupe-like +
1300–1600 m. +
curved +  and straight +
1 +  and 4 +
Limestone canyons, cliffs, and slopes. +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
membranous +
terminal +  and axillary +
persistent +  and deciduous +
glaucous +  and glabrous +
not leathery +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
glandular-pubescent +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
ascending +  and erect +
glandular-pubescent +  and glabrous +
ascending;erect +
5 +  and 4 +
Flowering Apr–Jun. +
navicular-sigmoid +
0.1 cm1 mm <br />0.001 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
short-petiolate +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
lanceolate +  and subulate +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 cm10 mm <br />0.01 m <br /> (13.5 cm135 mm <br />0.135 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Univ. Kansas Sci. Bull. +
minute +
brown +  and black +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (?) +  and 0.9 cm9 mm <br />0.009 m <br /> (?) +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
cauline +, proximal +  and basal +
14 cm140 mm <br />0.14 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
leathery +
0.9 cm9 mm <br />0.009 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
papillate +
denticulate +
Penstemon alamosensis +
Penstemon sect. Gentianoides +
species +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
rounded +  and inflated +
not constricted +
secund +  and interrupted +
34 cm340 mm <br />0.34 m <br /> (90 cm900 mm <br />0.9 m <br />) +
cylindric +
12 cm120 mm <br />0.12 m <br /> (34 cm340 mm <br />0.34 m <br />) +
straight +
gibbous +  and not spurred +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
cauline +  and proximal +