Chautems, A., Lopes, T. C. C., Peixoto, M., & Rossini, J. (2005). Five New Species of Nematanthus Schrad. (Gesneriaceae) From Eastern Brazil with a Revised Key to the Genus. Selbyana, 25(2), 210–224. Retrieved from https://journals.flvc.org/selbyana/article/view/121472