| Summary: | Thirty-one alpine species of <i>Cortinarius</i> (Agaricales, Cortinariaceae) were described from the alpine zone of the Alps during the second half of the XX century, by the Swiss mycologist Jules Favre, and by the French mycologists Denise Lamoure and Marcel Bon. Notoriously difficult to identify by macro- and microscopical characters, most of these species, which belong to subgen. <i>Telamonia,</i> have been thoroughly revised in global publications based on type sequencing. Recent surveys in the alpine areas of France (Savoie) and Italy (Lombardy), as well as the sequencing of D. Lamoure’s collections, identified three new species that are here described and illustrated: <i>C. dryadophilus</i> in sect. <i>Castanei</i>, <i>C. infidus</i> in sect. <i>Verni</i>, and <i>C. saniosopygmaeus</i> in sect. <i>Saniosi</i>. The holotypes of <i>C. caesionigrellus</i> Lamoure and <i>C. paleifer</i> var. <i>brachyspermus</i> Lamoure could be sequenced. A recent collection of the former is described and illustrated here for the first time, and based on available data, the latter name is recombined as <i>Cortinarius flexipes</i> var. <i>brachyspermus</i> comb. nov. Lastly, <i>C. argenteolilacinus</i> var. <i>dovrensis</i> is reported from the alpine zone for the first time and a new combination, <i>Thaxterogaster dovrensis</i> comb. & stat. nov. is introduced in the present work.
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