Tibell, Leif B. (1994). "Distribution patterns and dispersal strategies of Caliciales". Botanical Journal of the Linnean Society. 116 (3): 159–202. doi:10.1006/bojl.1994.1059.
Soto Medina, Edier; Prieto, Maria; Wedin, Mats (2018). "A new Bunodophoron species (Sphaerophoraceae, Lecanorales) from the Neotropics". The Lichenologist. 50 (3): 255–266. doi:10.1017/S0024282917000743.