Sain, M. P., J. Norrell-Tober, K. Barthel, M. Seawright, A. Blanton, K. L. Hertweck, J. S. Placyk, Jr., R. Small, L. R. Williams, M. G. Williams, and J. A. Banta. “Multiple Complementary Studies Clarify Which Co-Occurring Congener Presents the Greatest Hybridization Threat to a Rare Texas Endemic Wildflower (Hibiscus Dasycalyx: Malvaceae)”. Journal of the Botanical Research Institute of Texas, Vol. 15, no. 1, July 2021, pp. 283-08, doi:10.17348/jbrit.v15.i1.1064.