Mateo-Ramírez, Leticia, and Ricarda Riina. “Croton Calcareus: A New Species of dragon’s Blood (Euphorbiaceae) from Dry Forest in the State of Chiapas, Mexico”. European Journal of Taxonomy0, no. 657 (June 2, 2020). Accessed October 6, 2024. https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/967.