familyPlantaginaceae
genusPenstemon
subgenusPenstemon subg. Penstemon
sectionPenstemon sect. Coerulei
speciesPenstemon secundiflorus
Penstemon secundiflorus var. versicolor
PhytoKeys 80: 37. 2017.
Endemic
Basionym: Penstemon versicolor Pennell Contr. U.S. Natl. Herb. 20: 358. 1920
Treatment appears in FNA Volume 17. Treatment on page 124.
Cauline leaf blades oblanceolate to ovate or elliptic. Corollas dark blue or violet, glabrous or sparsely white-villous internally abaxially.
Phenology: Flowering May–Jun.
Habitat: Rocky, gravelly, or sandy soils, shortgrass prairies, foothills.
Elevation: 1400–1700 m.
Discussion
Variety versicolor is known from the Arkansas River drainage in south-central Colorado in Baca, Fremont, Las Animas, Otero, and Pueblo counties.
Selected References
None.
Lower Taxa
None.