Basionym Name:Calicium xylonellum Ach., Methodus, Sectio prior (Stockholmiæ): 92 (1803)
Homotypic synonyms:Calicium melanophaeum var. xylonellum (Ach.) Wahlenb., Fl. Suec. 2: 880 (1826)Calicium salicinum f. xylonellum (Ach.) Sandst., Abh. naturw. Ver. Bremen 21(1): 36 (1912)Calicium salicinum var. xylonellum (Ach.) Trevis., Flora, Regensburg 45(1): 5 (1862)Calicium sphaerocephalum var. xylonellum (Ach.) Wahlenb., Fl. lapp.: 486 (1812)Calicium trachelinum var. xylonellum (Ach.) Fr., Sched. Crit. Lich. Suec., Fasc. 1-4: 5 (1824)