Nelsonianthus tapianus (B.L. Turner) C. Jeffrey Nelsonianthus tapianus (B.L. Turner) C. Jeffrey, Kew Bull. 47(1). 1992 sec. Villaseñor & al. 2005≡Senecio tapianus B.L. Turner, Phytologia. 67(5). 1989 syn. sec. Villaseñor & al. 2005