Language: Spanish
A full macroscopic and microscopic description and illustration of 40 taxons of rare Phlegmacium (genus Cortinarius) recorded on northern Spain, especially on basque provinces of Biscay and Alava and on another territories of northern Peninsula (Castilla-Leon, Aragon and Cataluña), are done in this paper: C. aurantiobasalis, C. moënne-loccozi, C. subhygrophanus, C. caesiostramineus var. cadinanos-aguirrae, C. velicopia, C. parasuaveolens, C. arquatus, C. caesiocortinarus, C. barbarorum, C. calochrous, C. calochrous fma., C. citrinolilacinus var. citrinolilacinus, C. catharinae, C. pallens, C. pseudoparvus, C. platypus, C. aurantiotinctus, C. frondosophilus, C. provencalis, C. rioussetorum, C. cingulatus, C. myxazureus, C. epipoleus, C. elegantior var. elegantior, C. parafulmineus, C. cereifolius, C. eufulmineus, C. pseudofulgens, C. olearioides, C. glaucescens, C. splendificus, C. olivascentium, C. odoratus, C. citrinus var. paraionochlorus, C. polymorphus var. luteoimmarginatus, C. veneris, C. balteatoalbus, C. paracrassus, C. cupreoviolaceus, C. fulvo-ochrascens var. fulvo-ochrascens, C. montanus var. fageticola.