The sexual morph of Hohenbuehelia subreniformis (Pleurotaceae) discovered in Finland

A fresh collection of a Hohenbuehelia from Turku, Finland was determined through phylogenetic analyses of sequences of the nuclear ribosomal internal transcribed spacer (ITS) region, large ribosomal subunit (nLSU), translation elongation factor 1-alpha ( TEF-1α ), and RNA polymerase II second largest subunit ( RPB2 ) genes to be conspecific with ex-type cultures of Hohenbuehelia subreniformis , originally described from Ontario, Canada. No sexual morph was known; it is a member of the broad H. atrocoerulea clade. We provide a detailed description of the macro- and micromorphology of this species, which resembles pale forms of H. grisea but differs in having a more spathulate pileus and broader spores. Of the fifteen valid species formerly classified in the anamorph genus Nematoctonus , all but three are now linked to conspecific or closely related sexual morphs in Hohenbuehelia .