Penstemon caespitosus var. perbrevis

(Pennell) N. H. Holmgren
Brittonia 31: 104. 1979.
Endemic
Basionym: Penstemon caespitosus subsp. perbrevis Pennell Contr. U.S. Natl. Herb. 20: 375. 1920
Treatment appears in FNA Volume 17. Treatment on page 101. Mentioned on page 100.

Leaves 2.5–14 × 1–4 mm; blade obovate or spatulate. Flowers: pollen sacs navicular to subexplanate, 0.8–0.9 mm.


Phenology: Flowering May–Aug.
Habitat: Gravelly to clay soils, sagebrush shrublands, pinyon-juniper and pine woodlands.
Elevation: 2100–2900 m.

Discussion

Variety perbrevis occurs in Carbon, Duchesne, Emery, Garfield, Sanpete, Uintah, Utah, and Wasatch counties, Utah, and in Garfield County, Colorado. Some specimens from Rio Blanco County, Colorado, also approach this variety.

Selected References

None.

Lower Taxa

None.

Craig C. Freeman +
(Pennell) N. H. Holmgren +
Penstemon caespitosus subsp. perbrevis +
Colo. +  and Utah. +
2100–2900 m. +
Gravelly to clay soils, sagebrush shrublands, pinyon-juniper and pine woodlands. +
Flowering May–Aug. +
Penstemon caespitosus var. perbrevis +
Penstemon caespitosus +
variety +