Penstemon fremontii

Torrey & A. Gray

Proc. Amer. Acad. Arts 6: 60. 1862.

Common names: Fremont’s beardtongue
Endemic
Treatment appears in FNA Volume 17. Treatment on page 166. Mentioned on page 159, 167.

Stems ascending to erect, 8–25 (–40) cm, densely retrorsely hairy, not glaucous. Leaves basal and cauline, or basal absent or reduced, not leathery, retrorsely hairy or glabrous, sometimes glabrescent, not glaucous; basal and proximal cauline 30–75 (–100) × 2–18 (–27) mm, blade oblanceolate to elliptic, base tapered, margins entire, apex obtuse to acute; cauline 2–4 pairs, sessile, rarely short-petiolate, 22–77 × 3–10 (–15) mm, blade lanceolate, proximals sometimes oblanceolate, base tapered to truncate, apex acute. Thyrses interrupted to ± continuous, cylindric, (3–) 8–22 (–28) cm, axis moderately to densely retrorsely hairy, verticillasters (5–) 7–15, cymes (1 or) 2-flowered or 3-flowered, 2 per node; proximal bracts lanceolate, 16–50 (–63) × 3–10 mm; peduncles and pedicels retrorsely hairy. Flowers: calyx lobes ovate, (3–) 4–6.8 × 1.7–2.8 mm, glabrous, rarely ± puberulent; corolla blue to violet or purple, with violet nectar guides, funnelform, (12–) 14–23 (–28) mm, glabrous externally, glabrous internally, tube 6–8 mm, throat gradually inflated, not constricted at orifice, 6–9 mm diam., rounded abaxially; stamens included, pollen-sacs divergent, navicular, (1–) 1.2–1.5 (–1.8) mm, dehiscing incompletely, proximal 1/4 indehiscent, connective not splitting, sides sparsely to moderately hispid, hairs white or tan, to 0.4 (–1) mm, sutures papillate or denticulate, teeth to 0.1 mm; staminode 10–12 mm, included, 0.8–1.1 mm diam., tip recurved, distal 5–7 mm sparsely pilose, hairs yellow, to 1 mm; style 12–15 mm. Capsules 7–10 × 5–6 mm.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Leaves densely retrorsely hairy, rarely glabrescent, basal and proximal cauline 2–18(–27) mm wide. Penstemon fremontii var. fremontii
1 Leaves glabrous or glabrescent, except sometimes margins and midveins, basal and proximal cauline 2–12 mm wide. Penstemon fremontii var. glabrescens

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

... more about "Penstemon fremontii"
acute +  and obtuse +
Craig C. Freeman +
Torrey & A. Gray +
alternate +, opposite +, whorled +, helical +  and subopposite +
tapered;truncate +
Penstemon +
lanceolate;oblanceolate;elliptic +
not +  and leathery +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
puberulent +  and glabrous +
1.7mm;2.8mm +
short-tubular +  and short-campanulate +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
short-petiolate +  and sessile +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
2.2 cm22 mm <br />0.022 m <br /> (7.7 cm77 mm <br />0.077 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Fremont’s beardtongue +
not personate +, weakly bilabiate +  and strongly bilabiate +
2.3 cm23 mm <br />0.023 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
blue +  and violet or purple +
ventricose +
ventricose-ampliate +
1.4 cm14 mm <br />0.014 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
3-flowered +  and 2-flowered +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
scale-like +  and not needlelike +
Colo. +, Utah +  and Wyo. +
drupe-like +
curved +  and straight +
1 +  and 4 +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
yellow +, tan +  and white +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
membranous +
terminal +  and axillary +
persistent +  and deciduous +
cauline +  and basal +
orbiculate;linear;orbiculate;linear;truncate;oblanceolate;obovate;oblong;elliptic;round;lanceolate;ovate +
glutinous +
puberulent +, glandular-pubescent +  and glabrous +
lacerate +
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 />) +
spreading +, erect +  and ascending +
spreading;erect;ascending +
5 +  and 4 +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
sigmoid +  and navicular-sigmoid +
indehiscent +  and dehiscing +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
5 cm50 mm <br />0.05 m <br /> (6.3 cm63 mm <br />0.063 m <br />) +
1.6 cm16 mm <br />0.016 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
oblanceolate +
Proc. Amer. Acad. Arts +
minute +
tan +  and brown or dark-brown +
angled +  and angled-elongate +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
papillate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
1 cm10 mm <br />0.01 m <br /> (?) +  and 1.2 cm12 mm <br />0.012 m <br /> (?) +
short-petiolate +  and petiolate +
25 cm250 mm <br />0.25 m <br /> (40 cm400 mm <br />0.4 m <br />) +
glutinous +
climbing +  and scrambling +
sprawling +, creeping +  and prostrate +
ascending;erect +
not glaucous +, glabrescent +, glabrous +  and hairy +
reduced +
8 cm80 mm <br />0.08 m <br /> (25 cm250 mm <br />0.25 m <br />) +
not leathery +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
papillate +
denticulate +
Penstemon subg. Habroanthus +
Penstemon fremontii +
Penstemon sect. Glabri +
species +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
rounded +  and inflated +
not constricted +
interrupted +  and more or less continuous +
22 cm220 mm <br />0.22 m <br /> (28 cm280 mm <br />0.28 m <br />) +
cylindric +
8 cm80 mm <br />0.08 m <br /> (22 cm220 mm <br />0.22 m <br />) +
straight +
smooth +  and papillate +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
gibbous +  and not spurred +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
petiolate +  and sessile +
cauline +  and proximal +