Flora of North America species comparison

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Penstemon angustifolius var. dulcis

Penstemon angustifolius var. vernalensis
Photo is of parent taxon

broadbeard beardtongue, sweet beardtongue
Photo is of parent taxon

broadbeard beardtongue, vernal narrow-leaf beardtongue
Stems

27–45 cm, glabrous.

(8–)15–45 cm, glabrous, rarely scabrous.
Cauline leaves

5–8 pairs, blade lanceolate to linear.

4–7 pairs, blade lanceolate to linear.
Thyrses

proximal bracts ovate to lanceolate.

proximal bracts lanceolate to linear.
Flowers

corolla pink, 13–17 mm.

corolla blue, (14–)18–20(–22) mm.

Penstemon angustifolius var. dulcis

Penstemon angustifolius var. vernalensis
Phenology Flowering May–Jun. Flowering May–Jun.
Habitat Sand dunes, sagebrush, saltbush, juniper communities. Sandy soils, sand dunes, sagebrush and sagebrush-juniper communities.
Elevation 1400–1700 m. (4600–5600 ft.) 1500–1800 m. (4900–5900 ft.)
Distribution
from FNA
UT
[BONAP county map]
from FNA
CO; UT
[BONAP county map]
Discussion

Variety dulcis is known from Juab and Millard counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Variety vernalensis is known from the Green River Basin in extreme northwestern Colorado (Moffat and Rio Blanco counties) and northeastern Utah (Daggett and Uintah counties). The herbage of var. vernalensis usually is glabrous; some populations from Browns Park in Daggett and Moffat counties have scabrous leaves, bracts, and calyces.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 115. FNA vol. 17, p. 115.
Parent taxa Plantaginaceae > Penstemon > subg. Penstemon > sect. Coerulei > Penstemon angustifolius Plantaginaceae > Penstemon > subg. Penstemon > sect. Coerulei > Penstemon angustifolius
Sibling taxa
P. angustifolius var. angustifolius, P. angustifolius var. caudatus, P. angustifolius var. venosus, P. angustifolius var. vernalensis
P. angustifolius var. angustifolius, P. angustifolius var. caudatus, P. angustifolius var. dulcis, P. angustifolius var. venosus
Name authority Neese: Great Basin Naturalist 46: 459. (1986) N. H. Holmgren: Brittonia 31: 229, fig. 7. (1979)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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