- ↑ <![CDATA[B. D. Ryan & T. H. Nash in Nash, T. H., Ryan, B. D., Diederich, P., Gries, C. & Bungartz, F.]]>, 2004 In: Lichen Flora of the Greater Sonoran Desert RegionVol.: 2 p. 244
- ↑ 2.0 2.1 Roskov Y., Kunze T., Paglinawan L., Orrell T., Nicolson D., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Hernandez F., De Wever A. (red) (2013). "Species 2000 & ITIS Catalogue of Life: 2013 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 8 Septyembre 2013.CS1 maint: multiple names: authors list (link)
- ↑ LIAS: A Global Information System for Lichenized and Non-Lichenized Ascomycetes