Evening Primroses and Suncups West of the Cascade Mountains of Oregon and Washington

The Genera Camissonia, Camissoniopsis, Chylismia, Neoholmgrenia and Taraxia

Contorted-pod Evening Primrose, Slender Evening-primrose, Twisted Suncup: Camissonia contorta (Synonyms: Oenothera contorta, Oenothera contorta var. contorta, Sphaerostigma contortum) -

Beach Evening-primrose: Camissoniopsis cheiranthifolia ssp. cheiranthifolia (Synonyms: Camissonia cheiranthifolia, Camissonia cheiranthifolia ssp. cheiranthifolia, Camissoniopsis cheiranthifolia ssp. cheiranthifolia, Oenothera cheiranthifolia, Oenothera cheiranthifolia var. cheiranthifolia) -

Paiute Suncup: Chylismia scapoidea (Synonym: Camissonia scapoidea) -

Hilgard's Evening Primrose, Hilgard's Suncup: Neoholmgrenia hilgardii (Synonyms: Camissonia hilgardii, Holmgrenia hilgardii, Oenothera andina var. hilgardii, Oenothera contorta, Oenothera contorta var. hilgardii, Oenothera hilgardii) - Collected on Hayden Island near Portland.

Golden Eggs, Suncup: Taraxia ovata (Synonyms: Camissonia ovata, Oenothera ovata) -

Hill Suncup, Slender-flowered Evening Primrose: Tetrapteron graciliflorum (Synonym: Camissonia graciliflora, Oenothera graciliflora, Tetrapteron graciliflora) -