Synonymy:
Urceolaria gypsacea Ach., Lich. Univ.: 338 (1810)
Lichen opegraphus * gypsacea (Ach.) Lam., Encycl. Méth., Bot. Suppl. (Paris) 3(2): 407 (1813)
Lecanora scruposa var. gypsacea (Ach.) Sommerf., Suppl. Fl. lapp. (Oslo): 100 (1826)
Parmelia scruposa var. gypsacea (Ach.) Flot., Flora, Regensburg 11(46): 734 (1828)
Urceolaria scruposa var. gypsacea (Ach.) Körb., Syst. lich. germ. (Breslau): 168 (1855)
Urceolaria scruposa f. gypsacea (Ach.) Leight., Lich.-Fl. Great Brit. Irel. Chann. Isl.: 234 (1871)
Urceolaria albissima var. gypsacea (Ach.) Arnold, Flora, Regensburg 67(22): 417 (1884)
Diploschistes scruposus subsp. gypsaceus (Ach.) Clauzade & Cl. Roux, Bull. Soc. Linn. Provence 40: 110 (1989)

Position in classification:
Diploschistes, Graphidaceae, Graphidales, Ostropomycetidae, Lecanoromycetes, Ascomycota, Fungi

Note:
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