Decrypting the Hebeloma crustuliniforme complex : European species of Hebeloma section Denudata subsect. Denudata (Agaricales)

• Published in: Persoonia - Molecular Phylogeny and Evolution of Fungi
• Main Authors: Eberhardt, Ursula, Beker, Henry J, Vesterholt, Jan
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2015
• Subjects: Biology and Life Sciences; Hebeloma eburneum; Hebeloma helodes; Hebeloma lutense; Hebeloma minus; Hebeloma pusillum; MCM7; mitochondrial SSU; Salix; PHYLOGENETIC ANALYSES; FUNGI; COMMUNITY; MODELS; SOIL; Arctic
• Online Access: https://biblio.ugent.be/publication/5915894; http://hdl.handle.net/1854/LU-5915894; https://doi.org/10.3767/003158515X687704; https://biblio.ugent.be/publication/5915894/file/5915938

Hebeloma subsection Denudata includes the type of H. section Denudata, Hebeloma crustuliniforme, as well as the majority of the taxa commonly included in the Hebeloma crustuliniforme complex. Complementing the work of D.K. Aanen and co-workers, and using refined morphological and molecular methods we were able to recognize further individual taxa within the section. Fifteen species occurring in Europe are assigned to H. subsect. Denudata. Of these, we describe eight species as new, namely H. aanenii, H. aurantioumbrinum, H. geminatum, H. louiseae, H. luteicystidiatum, H. pallidolabiatum, H. perexiguum and H. salicicola. Naucoria bellotiana, a species very similar to H. alpinum is recombined into Hebeloma. A key to Hebeloma subsect. Denudata is provided. We demonstrate that within this subsection there is good overall consistency between morphological, phylogenetic and biological species concepts. In contrast to current opinion, in this group there is little species overlap, particularly when also considering species frequencies, between arctic and alpine floras on one hand and temperate on the other.