Basionym Name:Pyxine cocoes var. caesiopruinosa Tuck., [as 'cocoës'], in Nylander, Syn. meth. lich. (Parisiis) 2: 2 (1869)
Homotypic synonyms:Pyxine caesiopruinosa (Tuck.) Imshaug, Trans. Am. microsc. Soc. 76: 262 (1957)Pyxine sorediata f. caesiopruinosa (Tuck.) Hue, Nouv. Arch. Mus. Hist. Nat., Paris, 4 sér. 2: 86 (1900)