Penstemon angustifolius var. angustifolius

Endemic
Treatment appears in FNA Volume 17. Treatment on page 115. Mentioned on page 114.

Stems (6–)10–30 cm, glabrous or scabrous. Cauline leaves 2–5(or 6) pairs, blade lanceolate to linear. Thyrses: proximal bracts lanceolate to linear. Flowers: corolla blue, rarely lavender or pink, 14–18 mm. 2n = 16.


Phenology: Flowering May–Jul.
Habitat: Sandy or gravelly soils, shortgrass prairies, sagebrush shrublands.
Elevation: 600–2400 m.

Distribution

Colo., Mont., Nebr., N.Dak., S.Dak., Wyo.

Discussion

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

Selected References

None.

Lower Taxa

None.