Puppo, Pamela. “New Distributions for 24 Species of Calceolaria (Calceolariaceae) in Peru and First Record of Calceolaria Perfoliata”. Revista Peruana de Biología 17, no. 2 (August 16, 2010): 155–162. Accessed June 6, 2025. https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/21.