Less is better than more: reassessing the monotypic nature of Irpicodon (Amylocorticiaceae, Basidiomycota)

Palla, Balázs and Dima, Bálint and Papp, Viktor (2024) Less is better than more: reassessing the monotypic nature of Irpicodon (Amylocorticiaceae, Basidiomycota). PLANT AND FUNGAL SYSTEMATICS, 69 (2). pp. 177-185. ISSN 2544-7459

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Abstract

Within the family Amylocorticiaceae, conspicuous morphological affinities exist among the previously defined species Irpicodon pendulus, Plicaturopsis crispa and Plicatura nivea. With the aid of macro- and micro-morphological characters and phylogenetic evidence based on 3-gene datasets, a comprehensive reassessment of generic boundaries within these taxa was conducted. Upon reviewing the systematic position of the taxa included, the three genera emerged as a well-defined monophyletic clade. Based on the genetic divergence observed, coupled with the robust support for monophyly, similarities in ecological roles, and congruence in macro- and micromorphological characteristics, we suggest a revised genus concept that synonymizes Irpicodon (as well as Plicaturopsis) with the earliest established genus Plicatura.

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