Basionym Name:Umbilicaria durietzii Frey, [as 'Du-Rietzii'] Ber. schweiz. bot. Ges. 59: 462 (1949)
Homotypic synonyms:Omphalodiscus subaprinus var. durietzii (Frey) Llano, Monograph of the Lichen Family Umbilicariaceae in the Western Hemisphere: 102 (1950)