Grings, M., BOLDRINI, I. I., KNOB, A., & BORDIGNON, S. A. D. L. (2014). A new species of <em>Calyculogygas</em> (Malvaceae) from southern Brazil. Phytotaxa, 178(1), 43–49. https://doi.org/10.11646/phytotaxa.178.1.5