Type studies of Cortinarius phaeopygmaeus and C. rusticellus, and a new salicticolous species C. chrysophilus

Abstract

<p>This article deals with the taxonomy of three species belonging to <i>Cortinarius</i> subgenus <i>Telamonia</i> section <i>Flexipedes</i>. The micromorphologies and mostly ITS gene regions were examined from the lectotypes and some syntypes of <i>Cortinarius phaeopygmaeus</i> J. Favre and <i>C. rusticellus</i> J. Favre. <i>Cortinarius phaeopygmaeus</i> appeared to be a previously unrecognized species. <i>Cortinarius rusticellus</i> is reduced to a synonym of <i>C. comatus</i> J. Favre. Its lectotype and protologue agreed with <i>C. comatus</i>. The syntype of <i>C. rusticellus</i> was conspecific with <i>C. lamoureae</i> Bon. <i>Cortinarius chrysophilus</i> is described as new from <i>Salix</i> vegetation on boreal seashores and in the alpine zone. It belongs to the <i>C. cucumisporus</i> complex.<br></p>