Gonolobus xanthotrichus Brandegee Gonolobus xanthotrichus Brandegee in Zoë 5(11): 251–252. 1908 sec. Juárez-Jaimes & al. 2007=Vincetoxicum xanthotrichum (Brandegee) Standl. in Contr. U.S. Natl. Herb. 23(4): 1193. 1924 syn. sec. The Plant List 2013