Gonzalezia decurrens (A. Gray) E.E. Schill. & Panero Gonzalezia decurrens (A. Gray) E.E. Schill. & Panero in Bot. J. Linn. Soc. 167(3): 327. 2011 sec. Villaseñor 2016≡Tithonia decurrens A. Gray in Mem. Amer. Acad. Arts, n.s., 4: 85. 1849 syn. sec. Schilling & Panero 2011