﻿Two new Rinodina lichens from South Korea, with an updated key to the species of Rinodina in the far eastern Asia.

Beeyoung Gun Lee,Jae-Seoun Hur

doi:10.3897/mycokeys.87.71524

Abstract

Rinodinasalicis Lee & Hur and Rinodinazeorina Lee & Hur are described as new lichen-forming fungi from forested wetlands or a humid forest in South Korea. Rinodinasalicis is distinguishable from Rinodinaexcrescens Vain., the most similar species, by its olive-gray thallus with smaller areoles without having blastidia, contiguous apothecia, non-pruinose discs, paler disc color, wider ascospores in the Pachysporaria-type II, and the absence of secondary metabolites. Rinodinazeorina differs from Rinodinahypobadia Sheard by areolate and brownish thallus, non-pruinose apothecia, colorless and wider parathecium, narrower paraphyses with non-pigmented and unswollen tips, longer and narrower ascospores with angular to globose lumina, and the absence of pannarin. Molecular analyses employing internal transcribed spacer (ITS) sequences strongly support the two new species to be unique in the genus Rinodina. An updated key is provided to assist in the identification of all 63 taxa in Rinodina of the far eastern Asia.

Highlights

Rinodina, the largest genus in the family Physciaceae, comprises about three hundred species worldwide (Sheard et al 2017; Wijayawardene et al 2020)
As the pattern of ascospore ontogeny is considered more important than the spore type itself, it is understood that the ascospore types should be respected in developmental stages of a spore (Giralt 1994; Grube and Arup 2001; Sheard 2010; Resl et al 2016)
We describe them as new species, Rinodina salicis and R. zeorina, and this discovery contributes to the taxonomy with overall 63 taxa in the genus Rinodina of the far eastern Asia

Summary

Introduction

The largest genus in the family Physciaceae, comprises about three hundred species worldwide (Sheard et al 2017; Wijayawardene et al 2020). The species of Rinodina in the far eastern Asia are mainly corticolous and the main genera of the substrate trees are Quercus, Picea, Salix, Betula and Alnus (Fig. 1) (Lendemer et al 2012; Sheard et al 2012; Joshi et al 2013; Kondratyuk et al 2013, 2016, 2017, 2020; Aptroot and Moon 2014; Sheard et al 2017; Yakovchenko et al 2018; Galanina and Ezhkin 2019; Gananina et al 2021). The type specimens are deposited in the herbarium of the Baekdudaegan National Arboretum (KBA, the herbarium acronym in the Index Herbariorum), South Korea

Materials and methods

Results and discussion

62 Rinodina sheardii