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Issue: Vol. 597 No. 4: 17 May 2023
Type: Article
Published: 2023-05-17
DOI: 10.11646/phytotaxa.597.4.4
Page range: 287-296
Abstract views: 87
PDF downloaded: 4

Three new species of Herpothallon (Lichenized Ascomycota) from Southern China

Institute of Environment and Ecology, Shandong Normal University, Jinan, 250014, P. R. China.
Institute of Environment and Ecology, Shandong Normal University, Jinan, 250014, P. R. China.
Institute of Environment and Ecology, Shandong Normal University, Jinan, 250014, P. R. China.
Shandong Museum, Jinan, 250014, P. R. China.
Institute of Environment and Ecology, Shandong Normal University, Jinan, 250014, P. R. China.
Arthoniaceae byssoid thalli sterile lichens taxonomy mtSSU Lichens

Abstract

This paper describes three species of Herpothallon new to science from southern China: H. glaucescens, H. lilacinum and H. tomentosum. The three species all possess a non-pigmented thallus, hypothallus and prothallus. Herpothallon glaucescens has a white, whitish grey to greyish green thallus and swollen, subglobose to ± vermiform pseudisidia, rounded at the top. Herpothallon lilacinum has subglobose or irregularly cushion-shaped, fluffy-felty pseudisidia, white at the base, lilac to lilac grey at their tips. Herpothallon tomentosum has globular pseudisidia, felty with many projecting hyphae, sometimes containing a central pycnidium. Detailed descriptions for all three new species are provided with an updated key to the genus Herpothallon in China. Additionally, a phylogenetic tree based on Bayesian and ML analyses of mtSSU data shows the position of the new species in Herpothallon.

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