familyPlantaginaceae
genusPenstemon
subgenusPenstemon subg. Penstemon
sectionPenstemon sect. Coerulei
speciesPenstemon angustifolius
Penstemon angustifolius var. vernalensis
Brittonia 31: 229, fig. 7. 1979.
Common names: Vernal narrow-leaf beardtongue
Endemic
Stems (8–)15–45 cm, glabrous, rarely scabrous. Cauline leaves 4–7 pairs, blade lanceolate to linear. Thyrses: proximal bracts lanceolate to linear. Flowers: corolla blue, (14–)18–20(–22) mm.
Phenology: Flowering May–Jun.
Habitat: Sandy soils, sand dunes, sagebrush and sagebrush-juniper communities.
Elevation: 1500–1800 m.
Discussion
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.
Selected References
None.
Lower Taxa
None.