1. Adamčík S, Ližon P, Ripková S (2005) Hygrophorus taxa from Slovakia described by Kalchbrenner. Sydowia 57:154–165
2. Arnolds E (1979) Notes on Hygrophorus III. The group of Hygrophorus olivaceoalbus (Hygrophorus subsect. Olivaceoumbrini bat.) in North-Western Europe. Persoonia 10:357–382
3. Arnolds E (1986) Notes on Hygrophorus VII. On the taxonomy and nomenclature of some species of Hygrophorus. Persoonia 13:69–76
4. Arnolds E (1990) Genus Hygrophorus. In: Bas C, Noordeloos ME, Kuyper TW, Vellinga EC (eds) Flora Agaricina Neerlandica 2. AA Balkema, Lisse
5. Bellanger JM, Lebeuf R, Sesli E, Loizides M, Schwarz C, Moreau PA, Liimatainen K, Larsson E (2021) Hygrophorus sect. Olivaceoumbrini: new boundaries, extended biogeography and unexpected diversity unravelled by transatlantic studies. Persoonia 46:272–312. https://doi.org/10.3767/persoonia.2021.46.10