Taxonomy and phylogeny of causing witches' broom of species.

was first found on in Nikko, Tochigi Prefecture, Japan and described only with a brief mentions and illustration of a specimen in 1896. This fungus causes a witches' broom disease of species. To stabilize the concept of this species, the specimen in the protologue was located, carefully examined, and illustrated. In addition, the name was epitypified based on a newly collected topotype specimen. A phylogenetic tree using ITS and LSU sequences showed that our isolates of grouped with other species on forming a monophyletic clade with strong statistical support and were unrelated to , another causal agent of witches' broom disease on species.