Clark, John L., and Laura Clavijo. “Two New Species of Besleria (Gesneriaceae) from the Cordillera Occidental in the Colombian Andes”. Journal of the Botanical Research Institute of Texas 20, no. 2 (June 17, 2026): 155–160. Accessed July 12, 2026. https://journals.brit.org/jbrit/article/view/1474.