Slender Clarkia, Slender Godetia: Clarkia gracilis ssp. gracilis (Synonyms: Godetia amoena var. concolor, Godetia amoena var. gracilis) - Petals not lobed. Sepals grown together, not separating, and turned to one side under flower. Flower buds recurved, then erect upon flowering. Petals pink to lavender and usually unspotted, ranging from 8-20 mm long. Stigmas 1-7 mm long, the stigma lobes 1-1,5 mm long. Mostly found west of the Cascades, but has been collected in the Bly Ranger District of the Fremont N.F. of south-central Oregon.
Mt. Lassen Clarkia, Mount Lassen Clarkia: Clarkia lassenensis (Synonym: Godetia lassenensis) - Petals not lobed. Petals not narrowed to a stalk-like base or claw. Petals close at night. Ovary with 8 grooves. Sepals stay fused and reflexed to one side under the flower. Leaves linear with the lower ones almost opposite. The flowers are solitary in the leaf axils and have pink-purple petals. Plants with 8 fertile stamens.
Deerhorn, Elkhorns Clarkia, Pinkfairies, Pink Fairies, Ragged Robin Clarkia pulchella - Petals noticeably 3-lobed, the lateral lobes nearly as prominent as the central lobe. The petals are 5-25 mm long. The flowers do not close at night. Plants with 4 fertile stamens.
Winecup Clarkia, Small-flowered Godetia Clarkia purpurea ssp. quadrivulnera (Synonyms: Clarkia quadrivulnera, Godetia purpurea var. parviflora, Godetia quadrivulnera, Godetia quadrivulnera var. vacensis) - Petals not lobed. Found mostly west of the Cascades but may be found in Wasco County, Oregon and Klickitat County, Washington.
Twiggy Godetia: Clarkia purpurea ssp. viminea (Synonyms: Clarkia viminea, Godetia viminea) - Found mostly west of the Cascades but may be found along the foothills of the Cascades south of The Dalles, OR (collected along Badger Creek in that area).
Common Clarkia, Diamond Clarkia, Diamond Fairyfan, Rhombic-petaled Clarkia: Clarkia rhomboidea - Petals narrow to a stalk-like base or claw. Petals do not close at night. Petals narrowly rhomboidal, 5-10 mm long. The ovary has 4 grooves. The sepals all separate as the flower opens. The leaves are elliptic to ovate with the lower and middle ones opposite. The flowers are solitary in the leaf axils with pink-purple petals. Plants with 8 fertile stamens.