Synonymy:
Agaricus quietus Fr., Systema Mycologicum 1: 69 (1821)
Galorrheus quietus (Fr.) P. Kumm., Führ. Pilzk. (Zerbst): 126 (1871)
Lactifluus quietus (Fr.) Kuntze, Revis. gen. pl. (Leipzig) 2: 856 (1891)

Lactarius quietus var. unicolor Fr., Monogr. Hymenomyc. Suec. (Upsaliae) 2(2): 170 (1863)

Lactarius quietus var. incanus Hesler & A.H. Sm., North American Species of Lactarius (Ann Arbor): 478 (1979)

Position in classification:
Lactarius, Russulaceae, Russulales, Incertae sedis, Agaricomycetes, Basidiomycota, Fungi

Note:
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