Senecio wootonii Greene, Bull. Torrey Bot. Club. 25. 1898 sec. Villaseñor & al. 2005
- =Senecio toluccanus var. microdontus A. Gray, Syn. Fl. N. Amer. 1(2). 1878 syn. sec. Villaseñor & al. 2005
- =Senecio microdontus (A. Gray) A. Heller, Bull. Torrey Bot. Club. 24(10). 1897 syn. sec. Villaseñor & al. 2005
- =Senecio anacletus Greene, Pittonia. 4. 1901 syn. sec. Villaseñor & al. 2005