Basionym Name:Collema multifidum f. conchilobum Flot., Linnaea 23: 162 (1850)
Homotypic synonyms:Collema conchilobum (Flot.) Körb., Syst. lich. germ. (Breslau): 407 (1855)Collema furvum f. conchilobum (Flot.) Müll. Arg., Revue mycol., Toulouse 6(no. 21): 15 (1884)