Matelea chrysantha (Greenm.) Woodson Matelea chrysantha (Greenm.) Woodson in Ann. Missouri Bot. Gard. 28: 222. 1941 sec. Juárez-Jaimes & al. 2007=Vincetoxicum chrysanthum (Greenm.) Standl. in Contr. U.S. Natl. Herb. 23(4): 1190. 1924 syn. sec. Tropicos 2013