Robinson†, Harold, Vicki A. Funk†, Carol L. Kelloff, and Raymund Chan. “Vickianthus, a New Genus of the Vernonieae (Compositae) from Mexico”. Journal of the Botanical Research Institute of Texas 17, no. 1 (July 21, 2023): 139–149. Accessed May 20, 2024. https://journals.brit.org/jbrit/article/view/1291.