Abstract

We report here the first wild locality of <em>Exobasidium rhododendri</em> (Fuckel) C. E. Cramer in Poland. This peculiar species is an obligatory pathogenic basidiomycete, which induces formation of galls on leaves of <em>Rhododendron</em>. It was found for the first time in Poland in 2017 on <em>Rhododendron ferrugineum</em> L. plants in a population of this shrub in the Karkonosze Mts (the Sudetes range). The species was recently shown to be native and a relict. We also present a basic description of the species based on the specimens from the abovementioned locality.

Highlights

  • Exobasidium is a genus of Basidiomycota belonging to the class Exobasidiomycetes, which includes obligatory pathogens of plants from the family Ericaceae and order Theales

  • Exobasidium species parasitizing Ericaceae include two distinct clades evolutionarily linked with their plant host groups: the genus Rhododendron (Ericoideae) and members of the subfamily Vaccinioideae [1]

  • E. rhododendri is commonly found throughout the distribution ranges of its plant hosts

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Summary

Introduction

Exobasidium is a genus of Basidiomycota belonging to the class Exobasidiomycetes, which includes obligatory pathogens of plants from the family Ericaceae and order Theales. Keywords Basidiomycota; distribution; fungal pathogens; Rhododendron ferrugineum Exobasidium species parasitizing Ericaceae include two distinct clades evolutionarily linked with their plant host groups: the genus Rhododendron (Ericoideae) and members of the subfamily Vaccinioideae [1].

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