"Onagraceae" . "Clarkia purpurea" . . . . "Myrtales" . "Winecup Clarkia" . . "Clarkia" . "(W. Curtis) A. Nelson and J.F. Macbr." . "Magnoliophyta" . "Clarkia purpurea (W. Curtis) A. Nelson and J.F. Macbr." . . . "Magnoliopsida" . . . "Plantae" . . . . . . . . .