Penstemon eriantherus var. cleburnei

(M. E. Jones) Dorn

Vasc. Pl. Wyoming, 300. 1988.

Common names: Cleburn’s beardtongue
Endemic
Basionym: Penstemon cleburnei M. E. Jones Contr. W. Bot. 12: 62. 1908
Treatment appears in FNA Volume 17. Treatment on page 135. Mentioned on page 134.

Stems retrorsely hairy, sometimes also villous. Leaves glabrate or retrorsely hairy abaxially, retrorsely hairy and, sometimes, villous adaxially. Flowers: corolla lavender to violet, ventricose-ampliate, 16–22(–25) mm, constricted at orifice; pollen sacs explanate, 0.8–1.2 mm; staminode: distal 2–4 mm densely lanate, hairs orangish, to 3 mm; style 9–12(–14) mm.


Phenology: Flowering May–Jun(–Jul).
Habitat: Clayey, sandy, or gravelly soils, sagebrush shrublands.
Elevation: 1400–2500 m.

Discussion

Variety cleburnei occurs mostly in central and western Wyoming, west of the Bighorn Mountains, Casper Arch, and Laramie Mountains; some populations extend into northeastern Utah. Variety cleburnei and var. eriantherus intergrade in eastern and north-central Wyoming.

Selected References

None.

Lower Taxa

None.
Craig C. Freeman +
(M. E. Jones) Dorn +
Penstemon cleburnei +
Cleburn’s beardtongue +
Utah +  and Wyo. +
1400–2500 m. +
Clayey, sandy, or gravelly soils, sagebrush shrublands. +
Flowering May–Jun(–Jul). +
Vasc. Pl. Wyoming, +
Penstemon sect. Albidi +
Penstemon eriantherus var. cleburnei +
Penstemon eriantherus +
variety +