Flora of North America species comparison

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Penstemon angustifolius var. dulcis

Penstemon angustifolius var. angustifolius
Photo is of parent taxon

broadbeard beardtongue, sweet beardtongue
Photo is of parent taxon

broadbeard beardtongue
Stems

27–45 cm, glabrous.

(6–)10–30 cm, glabrous or scabrous.
Cauline leaves

5–8 pairs, blade lanceolate to linear.

2–5(or 6) pairs, blade lanceolate to linear.
Thyrses

proximal bracts ovate to lanceolate.

proximal bracts lanceolate to linear.
Flowers

corolla pink, 13–17 mm.

corolla blue, rarely lavender or pink, 14–18 mm.
2n

= 16.

Penstemon angustifolius var. dulcis

Penstemon angustifolius var. angustifolius
Phenology Flowering May–Jun. Flowering May–Jul.
Habitat Sand dunes, sagebrush, saltbush, juniper communities. Sandy or gravelly soils, shortgrass prairies, sagebrush shrublands.
Elevation 1400–1700 m. (4600–5600 ft.) 600–2400 m. (2000–7900 ft.)
Distribution
from FNA
UT
[BONAP county map]
from FNA
CO; MT; ND; NE; SD; WY
[BONAP county map]
Discussion

Variety dulcis is known from Juab and Millard counties.

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

Variety angustifolius is known from the northern Great Plains, and it passes into var. caudatus in northeastern Colorado and western Nebraska.

(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. caudatus, P. angustifolius var. dulcis, P. angustifolius var. venosus, P. angustifolius var. vernalensis
Name authority Neese: Great Basin Naturalist 46: 459. (1986) unknown
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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