Clark, John L. “Reldia Oligantha (Gesneriaceae), a New Lithophytic Herb from the Cordillera Del Cóndor in Southern Ecuador”. Journal of the Botanical Research Institute of Texas 20, no. 1 (April 15, 2026): 75–78. Accessed May 4, 2026. https://journals.brit.org/jbrit/article/view/1465.