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Issue: Vol. 626 No. 4: 28 Nov. 2023
Type: Article
Published: 2023-11-28
DOI: 10.11646/phytotaxa.626.4.5
Page range: 279-289
Abstract views: 234
PDF downloaded: 6

Two new species of the fallax-pezizoides complex in Helvella (Helvellaceae, Pezizales) from Yunnan, China

Key Laboratory for Plant Diversity and Biogeography of East Asia; Yunnan Key Laboratory of Fungal Diversity and Green Development; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming; Yunnan 650201; China. Center of Excellence in Fungal Research; Mae Fah Luang University; Chiang Rai 57100; Thailand. School of Science; Mae Fah Luang University; Chiang Rai 57100; Thailand
Key Laboratory for Plant Diversity and Biogeography of East Asia; Yunnan Key Laboratory of Fungal Diversity and Green Development; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming; Yunnan 650201; China
Key Laboratory for Plant Diversity and Biogeography of East Asia; Yunnan Key Laboratory of Fungal Diversity and Green Development; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming; Yunnan 650201; China
Center of Excellence in Fungal Research; Mae Fah Luang University; Chiang Rai 57100; Thailand. School of Science; Mae Fah Luang University; Chiang Rai 57100; Thailand
Key Laboratory for Plant Diversity and Biogeography of East Asia; Yunnan Key Laboratory of Fungal Diversity and Green Development; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming; Yunnan 650201; China. Center of Excellence in Fungal Research; Mae Fah Luang University; Chiang Rai 57100; Thailand. School of Science; Mae Fah Luang University; Chiang Rai 57100; Thailand
Key Laboratory for Plant Diversity and Biogeography of East Asia; Yunnan Key Laboratory of Fungal Diversity and Green Development; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming; Yunnan 650201; China
fallax-pezizoides lineage Helvellaceae new species taxology Fungi

Abstract

During the investigation of Helvella in Yunnan, China, four saddle-like specimens were collected and studied. Through a comprehensive analysis of both morphological traits and phylogenetic data from LSU and hsp90 sequences, the four collections were identified and are described as two new species, i.e., Helvella liquii and H. pseudoatra. Helvella liquii stands out with its distinctive features, including the fusion of the pileus margin with the stipe, a slightly rugose coffee blackish surface on the receptacle, and relatively broad apex of the paraphyses. Helvella pseudoatra is characterized by a pubescent receptacle surface that exhibits shaded or dark grey to greyish brown. Additionally, the upwardly white to brown stipe with a basally white to greyish color further distinguishes this species. To provide a comprehensive understanding of these newly discovered taxa, detailed descriptions and illustrations of both Helvella liquii and H. pseudoatra species are accurately documented.

 

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