European Species of Hebeloma Section Theobromina
2013
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:
Hebelomaalboerumpens, H. griseopruinatum and H. parvicystidiatum. The first two of these species appear to be ectomycorrhizal with
Cistaceae:
Cistusand
Helianthemum.
Hebelomaparvicystidiatum 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
Hebelomaassociates 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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