[Haplopappus carthamoides (Hook.) A. Gray, moreHaplopappus carthamoides ssp. rigidus (Rydb.) H.M. Hall, Haplopappus carthamoides var. cusickii A. Gray, Haplopappus carthamoides var. erythropappus (Rydb.) H. St. John, Haplopappus carthamoides var. maximus A. Gray, Haplopappus carthamoides var. rigidus (Rydb.) M. Peck, Haplopappus carthamoides var. subsquarrosus (Greene) Dorn, Haplopappus carthamoides var. typicus (H.M. Hall) Cronquist]
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