Arnica stricta var. tomentosa (J.M.Macoun) Dorn accepted as Arnica angustifolia subsp. tomentosa (J.M.Macoun) G.W.Douglas & Ruyle-Dougl. (original description)
Artemisia tridentata var. spiciformis (Osterh.) Dorn accepted as Artemisia spiciformis Osterh. (original description)
Ligularia amplectens var. holmii (Greene) Dorn accepted as Senecio amplectens var. holmii (Greene) H.D.Harr. (original description)
Ligularia bigelovii var. hallii (A.Gray) Dorn (original description)
Packera streptanthifolia var. rubricaulis (Greene) Dorn (original description)
Packera werneriifolia var. alpina (A.Gray) Dorn (original description)
Pseudognaphalium microcephalum var. thermale (E.E.Nelson) Dorn accepted as Pseudognaphalium thermale (E.E.Nelson) G.L.Nesom (original description)