Sain, M. P. ., Norrell-Tober, J. ., Barthel, K., Seawright, M. ., Blanton, A. ., Hertweck, K. L. ., Placyk, Jr., J. S. ., Small, R. ., Williams, L. R. ., Williams, M. G. . and Banta, J. A. . (2021) “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, 15(1), pp. 283–308. doi: 10.17348/jbrit.v15.i1.1064.