Packera cana (Hooker) W. A. Weber & Á. Löve [family COMPOSITAE], Phytologia, 49: 46. 1981
Senecio canus Hooker [family COMPOSITAE], Fl. Bor.-Amer., 1: 333, plate 116. 1834
Senecio canus var. eradiatus D. C. Eaton [family COMPOSITAE]
Senecio canus var. purshianus (Nuttall) A. Nelson [family COMPOSITAE]
Senecio convallium Greenman [family COMPOSITAE]
Senecio hallii Britton [family COMPOSITAE]
Senecio hallii var. discoidea W. A. Weber [family COMPOSITAE]
Senecio harbourii Rydberg [family COMPOSITAE]
Senecio howellii Greene [family COMPOSITAE]
Senecio laramiensis A. Nelson [family COMPOSITAE]
Senecio oreopolus Greenman [family COMPOSITAE]
Senecio purshianus Nuttall [family COMPOSITAE]