Alpova komoviana (Boletales, Paxillaceae), a new sequestrate fungus from Montenegro, with a revised phylogeny of the genus in Europe

A new ectomycorrhizal species, Alpova komoviana, is described from several collections from Montenegro (south-eastern Europe), in association with Alnus incana ssp. incana (Betulaceae). Its interesting basal position in the strictly Alnus-associated Alpova lineage is discussed through morphology and phylogenetic analyses based on ITS, gpd and rpb2 nuclear DNA. ITS sequences of two other taxa are included in the analysis: Alpova rubescens and A. rubescens var. obscuratus; their identity and systematic positions are discussed.