Brodo, I.M., Lendemer, J.C., Harris, R.C., McMullin, R.T., de Silanes, M.E.López, van Miltenburg, N., Bull, R., Paradis, M., Ginter, A., 2024. Xanthosyne (Lecanoraceae), a new genus for Lecidea varians and related species in Europe and North America. The Bryologist 127, 169-219. doi:10.1639/0007-2745-127.2.16910.1639/0007-2745-127.2.169.s110.1639/0007-2745-127.2.169.s2