Abstract
This paper addresses section Theobromina within the genus Hebeloma (Agaricales). We recognise seven European species within this section, three of which are described as new: Hebeloma alboerumpens, H. griseopruinatum and H. parvicystidiatum. The first two of these species appear to be ectomycorrhizal with Cistaceae: Cistus and Helianthemum. Hebeloma parvicystidiatum is more likely to be in mycorrhizal association with Quercus spp. We also provide a key to the European species within sect. Theobromina and an updated key of known Hebeloma associates of Cistus. Molecular analyses based on multiple loci further illustrate the distinctness of the newly described taxa and provide molecular evidence, supporting the morphological evidence, for the relationship that exists among species of this section. The ITS is the only one from the sequenced loci that, alongside with morphology, distinguishes among all of the species of sect. Theobromina. The section gains most of its molecular support from the MCM7 locus, followed by RPB2.
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Acknowledgements
The authors would like to thank the herbaria in C (Copenhagen), CAG (Cagliari), IB (Innsbruck), H (Helsinki), ROHB (Rome) and TUR (Turku) for the loan of collections for study and sequencing, BR (Meise) for kindly handling the loans and to P.-A. Moreau from LIP (Lille) for managing the deposits. Furthermore, we very much appreciated the help of M. Contu, L. Contu, G. Corriol, D. Ghyselinck, A. Hausknecht, J. Heilmann-Clausen, A. Henrici, C. Hobart, H. Knudsen, K. Kokkonen, L. Krieglsteiner, I. Kytovuori, A. Lesonen, X. Llimona, M. Moser, L. Quadraccia, F. Reinwald, S. Scoles, K. Soop, J. Vauras for supplying us with interesting and exciting Hebeloma collections. Thanks also go to R. Foster, C. Hobart and C. Lovatt who regularly visited Bincliffe Mines in the UK for the past several years searching for H. griseopruinatum, although it failed to put in an appearance during any of their visits. We would also like to thank D. Öncü, C. Lundström, J. Petterson, M. Jonsson and R. Gadjieva for their assistance in the lab. The molecular data provided by J. Vila was funded by the project ‘Biodiversitat de fongs i líquens dels Països Catalans’ from the Secció de Ciències of Institut d’Estudis Catalans.
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Deceased: Jan Vesterholt
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Eberhardt, U., Beker, H.J., Vesterholt, J. et al. European Species of Hebeloma Section Theobromina . Fungal Diversity 58, 103–126 (2013). https://doi.org/10.1007/s13225-012-0188-3
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DOI: https://doi.org/10.1007/s13225-012-0188-3