Basionym Name:Toninia caulescens Anzi, Cat. Lich. Sondr.: 67 (1860)
Homotypic synonyms:Bilimbia caulescens (Anzi) Jatta, Syll. Lich. Ital. (Trano): 403 (1900)Lecidea caulescens (Anzi) Tuck., Gen. lich. (Amherst): 182 (1872)Lecidea squalida f. caulescens (Anzi) Tuck., Syn. N. Amer. Lich. (Boston) 2: 64 (1888)Lecidea squalida var. caulescens (Anzi) Nyl., in Stizenberger, Ber. Tät. St Gall. naturw. Ges.: 430 (1882)Thalloidima caulescens (Anzi) Arnold, Verh. Kaiserl.-Königl. zool.-bot. Ges. Wien 30: 131 (1881)Toninia squalida f. caulescens (Anzi) I.M. Lamb, Rhodora 56: 142 (1954)Toninia squalida var. caulescens (Anzi) Boistel, Nouv. Fl. Lich. (Paris) 2: 105 (1903)