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Issue: Vol. 759 No. 3: 29 May 2026
Type: Article
Published: 2026-05-29
DOI: 10.11646/phytotaxa.759.3.4
Page range: 245-260
Abstract views: 0
PDF downloaded: 0

Three new species and two new records of Thalloidima (Ramalinaceae, Ascomycota) in China

State Key Laboratory of Phytochemistry and Natural Medicines; Kunming Institute of Botany; Chinese Academy of Sciences & Yunnan Key Laboratory for Fungal Diversity and Green Development; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming; 650201; China; University of Chinese Academy of Sciences; Beijing 101408; China
Natural History Museum; University of Oslo; NO-0562 Oslo; Norway
Mangzha Forest Farm; Qilian County; Haibei 810499; China
Qinghai Shanshui Natural Resources Survey Institute; Xining 810008; China
Administration Bureau of Qinghai Mengda National Nature Reserve; Xunhua; Qinghiai 811100; China
State Key Laboratory of Phytochemistry and Natural Medicines; Kunming Institute of Botany; Chinese Academy of Sciences & Yunnan Key Laboratory for Fungal Diversity and Green Development; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming; 650201; China
State Key Laboratory of Phytochemistry and Natural Medicines; Kunming Institute of Botany; Chinese Academy of Sciences & Yunnan Key Laboratory for Fungal Diversity and Green Development; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming; 650201; China
Lichenized fungi Taxonomy Qinghai-Tibetan Plateau New genus record Phylogeny Lichens Fungi

Abstract

The lichen genus Thalloidima (Ramalinaceae, Ascomycota) is reported as new to China, with specimens primarily collected from the Qinghai-Tibetan Plateau. Through an integrative approach combining morphological, chemical, and molecular phylogenetic analyses of nrDNA ITS sequences, three species new to science are described: T. lobulatum Yu X. Gan & Xin Y. Wang, T. qinghaiense Yu X. Gan & Xin Y. Wang, and T. triseptatum Yu X. Gan & Xin Y. Wang. Additionally, T. sedifolium and T. squamatum are recorded in China for the first time. These discoveries bring the total number of recognised species within Thalloidima to 21. Critical diagnostic characters, including ascospore septation, thallus pruina development, and substrate specificity, are detailed and illustrated. A comprehensive taxonomic key to all currently known species of the genus is also provided.

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How to Cite

Gan, Y., Timdal, E., Wei, S., Zhang, S., Shi, Y., Wang, L. & Wang, X. (2026) Three new species and two new records of Thalloidima (Ramalinaceae, Ascomycota) in China. Phytotaxa 759 (3): 245–260. https://doi.org/10.11646/phytotaxa.759.3.4