Penstemon caespitosus var. caespitosus

Endemic
Treatment appears in FNA Volume 17. Treatment on page 100.

Leaves 4–10 (–21) × 1–3 mm; blade oblanceolate to linear. Flowers: pollen-sacs explanate, 0.6–0.8 mm.


Phenology: Flowering May–Jul(–Aug).
Habitat: Gravelly to clay soils, sagebrush shrublands, juniper woodlands, alpine meadows.
Elevation: 2000–2300(–3700) m.

Discussion

Variety caespitosus is the northern element of the species, occurring in much of western Colorado (Chaffee, Eagle, Grand, Gunnison, Jackson, Mesa, Moffat, Park, Rio Blanco, and Routt counties), extreme northeastern Utah (Daggett, Duchesne, Rich, Uintah, and Wasatch counties), and southwestern Wyoming (Carbon, Lincoln, Sublette, Sweetwater, and Uinta counties). The variety is sympatric with var. perbrevis in Duchesne and Uintah counties, Utah. Indument varies considerably throughout the range of this variety, with glabrate forms not unusual (D. D. Keck 1937).

Selected References

None.

Lower Taxa

None.

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

rounded +  and acute or mucronate +
Craig C. Freeman +
Nuttall ex A. Gray +
alternate +, opposite +, whorled +, helical +  and subopposite +
tapered +
Penstemon +
oblanceolate;linear +
not +  and leathery +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
scarious-margined +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
lanceolate;linear +
short-tubular +  and short-campanulate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1.7 cm17 mm <br />0.017 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
lavender +  and purplish lavender +
yellow-villous +
salverform +  and tubular-funnelform +
ampliate +  and ventricose-ampliate +
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
1-3-flowered +
scale-like +  and not needlelike +
Colo. +, Utah +  and Wyo. +
drupe-like +
2000–2300(–3700) m. +
curved +  and straight +
1 +  and 4 +
Gravelly to clay soils, sagebrush shrublands, juniper woodlands, alpine meadows. +
golden yellow +
glandular-pubescent +
pointed +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
membranous +
terminal +  and axillary +
1 cm10 mm <br />0.01 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
not cinereous +
persistent +  and deciduous +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
cauline +, proximal +  and basal +
not leathery +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
erose +  and entire +
glabrate +, hairy +  and glandular-pubescent +
toothed +  and entire +
herbaceous +  and scarious +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
ascending +  and erect +
ascending;erect +
5 +  and 4 +
Flowering May–Jul(–Aug). +
navicular-sigmoid +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
0.28 cm2.8 mm <br />0.0028 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Proc. Amer. Acad. Arts +
minute +
dark-brown +  and black +
angled +  and rounded +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
included +  and exserted +
0.9 cm9 mm <br />0.009 m <br /> (?) +  and 1.2 cm12 mm <br />0.012 m <br /> (?) +
subalternate +, alternate +, whorled +  and opposite +
climbing +  and scrambling +
decumbent;ascending;decumbent;ascending;erect;prostrate +
not glaucous +, glabrous +  and hairy +
1.3 cm13 mm <br />0.013 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
papillate +
denticulate +
Penstemon caespitosus var. caespitosus +
Penstemon caespitosus +
variety +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2-ridged +  and inflated +
not constricted +
secund +  and continuous +
cylindric +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
8 cm80 mm <br />0.08 m <br /> (10 cm100 mm <br />0.1 m <br />) +
not cinereous +
straight +
recurved +  and ascending +
pilose +  and hairy +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
gibbous +  and not spurred +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
subshrub +  and cespitose +