Basionym Name:Calicium gracilentum Ach., Lich. Univ.: 243 (1810)
Homotypic synonyms:Chaenotheca gracilenta (Ach.) Mattsson & Middelb., in Middelborg & Mattsson, Sommerfeltia 5: 45 (1987)Cladonia bellidiflora f. gracilenta (Ach.) Dalla Torre & Sarnth., Fl. Tirol, Vorarlberg, Liechtenstein, IV Band. Die Flechten von Tirol: 41 (1902)Cybebe gracilenta (Ach.) Tibell, Beih. Nova Hedwigia 79: 666 (1984)Embolus gracilentus (Ach.) Wallr., Fl. crypt. Germ. (Norimbergae) 1: 567 (1831)