familyPlantaginaceae
genusPenstemon
subgenusPenstemon subg. Penstemon
sectionPenstemon sect. Saccanthera
speciesPenstemon azureus
Penstemon azureus var. angustissimus
Syn. Fl. N. Amer. 2(1): 272. 1878.
Endemic
Synonyms: Penstemon azureus subsp. angustissimus (A. Gray) D. D. Keck
Revision as of 19:10, 16 December 2019 by FNA>Volume Importer
Cauline leaves 40–90 × 2–6 mm, blade lanceolate to linear, base tapered to clasping. Flowers: calyx lobes ovate, 5–6.5 × 1.4–2.3 mm, apex acuminate to caudate. 2n = 48.
Phenology: Flowering May–Aug.
Habitat: Moist woodlands, forests.
Elevation: 300–700 m.
Discussion
Variety angustissimus occurs in northern and central California.
Selected References
None.
Lower Taxa
None.