SanMartin-Gajardo, Ivonne, and L Patricia C Morellato. 2003. “Inter and Intraspecific Variation on Reproductive Phenology of the Brazilian Atlantic Forest Rubiaceae: Ecology and Phylogenetic Constraints”. Revista De Biología Tropical 51 (3-4):691–698. https://revistas.ucr.ac.cr/index.php/rbt/article/view/15837.