Rutstroemia alnobetulae sp. nov. (Helotiales, Rutstroemiaceae), une espèce nouvelle des aulnes verts

Description and illustration of a new Rutstroemia species, R. alnobetulae, are provided, which is characterized by its spore dimensions, the amyloid reaction of paraphyses, and by its host, dead wood of Alnus alnobetula (syn. A. viridis)