Basionym: Agaricus hypothejus Fr., Observationes mycologicae 2: 10 (1818) [MB#198526] Obligate synonyms: - Hygrophorus hypothejus var. hypothejus (Fr.) Fr., Epicrisis Systematis Mycologici: 324 (1838) [MB#423015] - Limacium hypothejus (Fr.) P. Kumm. (1871) [MB#295754] - Limacium hypothejum (Fr.) P. Kumm., Der Führer in die Pilzkunde: 119 (1871) [MB#507906] - Hygrophorus hypothejus f. hypothejus (Fr.) Fr. (1838) [MB#428867] Taxonomic synonyms: - Hygrophorus aureus Arrh., Monographia Hymenomycetum Sueciae 2: 127 (1863) [MB#209434] - Hygrophorus hypothejus var. aureus (Arrh.) Imler, Bull. Soc. Mycol. Fr.: 304 (1935) [MB#451378] - Limacium aureum (Arrh.) Ricken, Blätterpilze: 12 (1910) [MB#492993] - Hygrophorus hypothejus var. aureus (Arrh.) Imler (1935) [MB#553517] - Hygrophorus hypothejus var. expallens Boud., Icones Mycologicae Sér. 3 (Livr. 12): 14 & No. 240 (Tom. I Pl. 33) (1907) [MB#175232] - Agaricus vitellinus Alb. & Schwein., Conspectus Fungorum in Lusatiae superioris: 179, t. 10:4 (1805) [MB#497132] - Limacium vitellum (Alb. & Schwein.) J. Schröt., Kryptogamen-Flora von Schlesien 3.1 (33-40): 532 (1889) [MB#454272] - Agaricus vitellicolor Pers., Mycologia Europaea 3: 93 (1828) [MB#497131] - Hygrophorus hypothejus var. mendax Kalchbr., Icones selectae Hymenomycetum Hungariae 3: 43, t. 27:3 (1875) [MB#509632]