Basionym Name:Umbilicaria zahlbruckneri Frey, Ber. schweiz. bot. Ges. 45: 221 (1936)
Homotypic synonyms:Agyrophora zahlbruckneri (Frey) Llano, Monograph of the Lichen Family Umbilicariaceae in the Western Hemisphere: 60 (1950)Agyrophora zahlbruckneri var. zahlbruckneri (Frey) Llano, Monograph of the Lichen Family Umbilicariaceae in the Western Hemisphere: 60 (1950)