Roldana metepecus (B.L. Turner) C. Jeffrey Roldana metepecus (B.L. Turner) C. Jeffrey, Kew Bull. 47(1). 1992 sec. Villaseñor & al. 2005≡Senecio metepecus B.L. Turner, Phytologia. 66(6). 1989 syn. sec. Villaseñor & al. 2005