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Abstract
The North American species of Cortinarius section Sanguinei were studied using morphological characters and ITS and RPB2 sequence data. Several type collections also were examined. Four species were identified: C. harrisonii sp. nov, C. neosanguineus sp. nov., C. sanguineus and C. sierraensis comb. nov. Of these, C. sanguineus also occurs in Europe together with C. puniceus, a fifth member of the section. Typical features of these species include ± red, fairly small basidiomata, stipe basal mycelium often with yellow to reddish yellow tints, amygdaloid to ellipsoid spores, and aniline-red lamellar trama and pileipellis hyphae when mounted in KOH. Two other species with red lamellae C. marylandensis comb. nov. and C. smithii stat. nov. & nom. nov. also are discussed.
Acknowledgments
We thank Andrus and Maria Voitk, Michael Burzynski, Renée Lebeuf and André Paul for support during field collecting in Canada. We also thank Emma Harrower for providing information on C. neosanguineus collections, Dimitar Bojantchev for providing material and photo of C. sierraensis and Esteri Ohenoja for providing material of C. vitiosus. Curators of the herbaria of DAOM, EIU, G, H, IB, MICH, NYBG, S, TENN, TRTC, UBC and WTU are thanked for kindly sending material.
Financial support for this study was received from the Emil Aaltonen Foundation, the Academy of Finland (project 129052), Daniel E. Stuntz Memorial Foundation and from NSF DEB 1144974 to R. Petersen and K. Hughes.