Synonmys: Oenothera caespitosa Nutt. var. navajoensis (W.L. Wagner, Stockhouse & Klein) Cronq.; Oenothera cespitosa Nutt. ssp. navajoensis W.L. Wagner, Stockhouse & Klein [orthographic variant]; Oenothera cespitosa Nutt. var. navajoensis (W.L. Wagner, Stockhouse & Klein) Cronq. [orthographic variant]

Description: Perennial herbs, simple or branched; herbage typically puberulent to villous, glandular or glabrous, typically basal rosette; fragrant flowers, solitary, opening in evening. The variety is pubescent mainly along leaf margins and on the flowers.

Habitat: Sagebrush communities at 1125-2380 meters. Endemic to the Colorado River Plateau. Occurs in western Colorado into eastern Utah, south to northern Arizona and northwestern New Mexico. In New Mexico, San Juan County and a disjunct population in Sandoval County.

Remarks: Relatively rare within its distribution.

Important Literature:

Wagner, W.L., R.E. Stockhouse, W.M. Klein. The Systematics and Evolution of Oenothera caespitosa Species Complex (Onagraceae). Miss. Bot. vol. 12. 1985.

Information Compiled By: Mike Eisenfeld, 1998