Penstemon rydbergii var. rydbergii

IllustratedEndemic
Synonyms: Penstemon rydbergii var. varians (A. Nelson) Cronquist
Treatment appears in FNA Volume 17. Treatment on page 220. Mentioned on page 213, 221.

Stems retrorsely hairy, sometimes only in lines. Thyrses: axis retrorsely hairy or puberulent; proximal bract margins usually erose to lacerate proximally, sometimes entire. Flowers: calyx lobes (3.5–) 4–6.5 × 1.6–3.5 mm, margins lacerate, rarely erose, broadly scarious, apex acuminate or short to long-caudate; corolla 10–15 mm; pollen-sacs 0.5–0.8 mm. 2n = 16.


Phenology: Flowering Jun–Aug.
Habitat: Moist, grassy meadows, moist ravines, aspen thickets, rocky hillsides, subalpine parks.
Elevation: 1900–3300 m.

Discussion

Variety rydbergii is concentrated in the Southern Rocky Mountains from south-central Wyoming to northern New Mexico. D. D. Keck (1945) referred material from the vicinity of the Grand Canyon in Arizona and from the Uinta Mountains of northeastern Utah to var. rydbergii. Some Utah plants fit well with the concept of var. rydbergii used here; others appear to pass into Penstemon procerus. The Arizona plants are intermediate between var. aggregatus and var. rydbergii.

Selected References

None.

Lower Taxa

None.

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

puberulent +  and glabrous +
long-caudate +  and acuminate +
Craig C. Freeman +
A. Nelson +
puberulent +  and hairy +
alternate +, subopposite +, whorled +  and opposite +
glaucescent +
alternate +, opposite +, whorled +, helical +  and subopposite +
cauline +, proximal +  and basal +
rarely +, not glaucous +, glabrate +, pubescent +, hairy +, glandular-lanate +, glandular-pubescent +, puberulent +, glandular +  and glabrous +
not +  and leathery +
tapered;tapered +
lanceolate;elliptic or oblong +
not +  and leathery +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
oblong;ovate or obovate +
1.6mm;3.5mm +
short-tubular +  and short-campanulate +
0.4 cm4 mm <br />0.004 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 />) +
petiolate +  and sessile +
personate +, not personate +, bilabiate +  and symmetric +
yellowish +, white +, violet +  and blue or purple +
villous +  and glabrous +
ventricose +, tubular +  and tubular-funnelform +
ampliate +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
(3-)5-11-flowered +
scale-like +  and not needlelike +
Colo. +, N.Mex. +, Utah +  and Wyo. +
drupe-like +
1900–3300 m. +
curved +  and straight +
1 +  and 4 +
Moist, grassy meadows, moist ravines, aspen thickets, rocky hillsides, subalpine parks. +
golden yellow +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
membranous +
terminal +  and axillary +
persistent +  and deciduous +
basal +  and cauline +
not leathery +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
erose +  and entire +
glutinous +
glandular-ciliolate +, hairy +, puberulent +, glabrescent +, glabrous +  and glandular-pubescent +
lacerate +
axile +  and parietal +
basal +, apical +  and superior +
tenuinucellate +, unitegmic +  and hemitropous +
campylotropous +, hemianatropous +  and anatropous +
puberulent +, hairy +  and glabrous +
puberulent +, hairy +  and glabrous +
5 +  and 4 +
Flowering Jun–Aug. +
navicular-sigmoid +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
1/5 +  and 2/3 +
short-petiolate +
7 cm70 mm <br />0.07 m <br /> (11 cm110 mm <br />0.11 m <br />) +
5.2 cm52 mm <br />0.052 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (5.2 cm52 mm <br />0.052 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
Bull. Torrey Bot. Club +
minute +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
black +, gray +, brown +  and tan +
angled +  and slightly rounded +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Illustrated +  and Endemic +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
included +  and exserted +
0.6 cm6 mm <br />0.006 m <br /> (?) +  and 0.7 cm7 mm <br />0.007 m <br /> (?) +
subalternate +, alternate +, whorled +  and opposite +
70 cm700 mm <br />0.7 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
glutinous +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
erect;ascending;erect;ascending;decumbent +
20 cm200 mm <br />0.2 m <br /> (70 cm700 mm <br />0.7 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
papillate +  and smooth +
denticulate +
Penstemon rydbergii var. varians +
Penstemon rydbergii var. rydbergii +
Penstemon rydbergii +
variety +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
2-ridged +  and inflated +
not constricted +
10 cm100 mm <br />0.1 m <br /> (18 cm180 mm <br />0.18 m <br />) +
cylindric +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
straight +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
gibbous +  and not spurred +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
cauline +  and proximal +