Basionym Name:Usnea barbata var. cornuta Flot., Linnaea 17: 16 (1843)
Homotypic synonyms:Usnea flotowii Zahlbr., Bot. Jb. 60: 541 (1926)Usnea hirta f. cornuta (Flot.) Zanfr., Nuova Notarisia 28: 166 (1917)