Ricceri, C., Moraldo, B., & Pisani, G. (2018). Contribution to the knowledge of Viola L. sect. Melanium Ging. (Violaceae) of the central-southern Apennine and Sicily (Italy). Bullettin of the Gioenia Academy of Natural Sciences of Catania, 51(381), FP181-FP234. Retrieved from https://bollettino.gioenia.it/index.php/gioenia/article/view/5