Rodríguez de Sarmiento, M. N. (1973) “Contribution to the knowledge of genus Stachys in the province of Tucuman. II: Anatomical study of samples of Stachys petiolosa Briq. in high zones”, Lilloa, 33, pp. 305–310. Available at: https://www.lillo.org.ar/journals/index.php/lilloa/article/view/1267 (Accessed: 12 November 2026).