Sun Cups of the Mountains and Deserts of the American Southwest

The Genus Camissoniopsis

Hairy Sun Cup: Camissoniopsis hirtella (Synonyms: Camissonia hirtella, Oenothera hirtella, Oenothera micrantha var. jonesii)

Hall's Sun Cup: Camissoniopsis pallida ssp. hallii (Synonyms: Camissonia pallida subsp. hallii; Oenothera hallii)

Pale Sun Cup: Camissoniopsis pallida ssp. pallida (Synonyms: Camissonia pallida subsp. pallida; Oenothera abramsii)