Abstract
Two new species of Perenniporia, P. pseudotephroporasp. nov. and P. subcorticolasp. nov., are introduced respectively from Brazil and China based on morphological characteristics and molecular data. Perenniporia pseudotephropora is characterised by perennial, pileate basidiocarps with distinctly stratified tubes, grey pores, tissues becoming dark in KOH, a dimitic hyphal system with slightly dextrinoid arboriform skeletal hyphae and broadly ellipsoid to subglobose, truncate, weakly dextrinoid, cyanophilous basidiospores, measuring 4.9–5.2 × 4–4.8 μm. Perenniporia subcorticola is characterised by resupinate basidiocarps, yellow pores with thick dissepiments, tissues becoming dark in KOH, flexuous skeletal hyphae, ellipsoid, truncate and slightly dextrinoid basidiospores, measuring 4.2–5 × 3.5–4.2 µm. The morphologically-similar species and phylogenetically closely-related species to the two new species are discussed.
Highlights
Perenniporia Murrill (Polyporales, Basidiomycetes) is typified by Polyporus unitus Pers. (Decock and Stalpers 2006)
Several new species were proved to belong to Perenniporia, based on morphological characteristics and phylogenetic evidence, which improved the understanding of the phylogenetic structure of Perenniporia (Jang et al 2015; Huang et al 2017; Ji et al 2017; Liu et al 2017; Zhao and Ma 2019)
The combined ITS and nLSU dataset contained 101 sequences from 101 specimens referring to 59 taxa in this study
Summary
Perenniporia Murrill (Polyporales, Basidiomycetes) is typified by Polyporus unitus Pers. (Decock and Stalpers 2006). Extensive studies on the genus have been carried out during the last 20 years showing a high species diversity and nowadays, 120 taxa have been found (e.g. Hattori and Lee 1999; Decock 2001a, b; Decock et al 2001; Dai et al 2002; Decock and Stalpers 2006; Cui et al 2007; Xiong et al 2008; Cui and Zhao 2012; Zhao and Cui 2012; Zhao et al 2013; Decock and Ryvarden 2015; Jang et al 2015; Decock 2016; Viacheslav and Ryvarden 2016; Huang et al 2017; Ji et al 2017; Liu et al 2017; Shen et al 2018; Cui et al 2019; Zhao and Ma 2019). Zhao et al (2013) divided Perenniporia s.l. into seven clades, based on ITS and nLSU DNA phylogenetic inferences, each of these seven clades being distinguished by a specific combination of morphological characteristics that supported recognition at the genus level. The two species are described and illustrated
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