Basionym Name:Umbilicaria dichroa Nyl., Flora, Regensburg 38: 674 (1855)
Homotypic synonyms:Agyrophora dichroa (Nyl.) Llano, Monograph of the Lichen Family Umbilicariaceae in the Western Hemisphere: 62 (1950)Gyrophora dichroa (Nyl.) Müll. Arg., Jb. Königl. Bot. Gart. Berlin 2: 316 (1883)Gyrophoropsis dichroa (Nyl.) Räsänen, Anal. Soc. cient. argent. 128(3): 133 (1939)