familyPlantaginaceae
genusPenstemon
subgenusPenstemon subg. Penstemon
sectionPenstemon sect. Glabri
speciesPenstemon virgatus
Penstemon virgatus var. virgatus
Endemic
Stems puberulent. Leaves ± puberulent. 2n = 16.
Phenology: Flowering Jun–Oct.
Habitat: Sandy to gravelly hillsides, oak woodlands, pine forests.
Elevation: 2000–2900 m.
Distribution
Ariz., Colo., N.Mex.
Discussion
Variety virgatus occurs discontinuously in the mountains of north-central Arizona and of north-central and western New Mexico. Plants from Arizona, where the variety is sympatric with Penstemon putus (and sometimes collected with it), often are more slender and bear smaller flowers than do plants from New Mexico.
Selected References
None.
Lower Taxa
None.