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Helvella    species are ascomycetous macrofungi with saddle-shaped or cupulate apothecia. They are distributed worldwide and play an important ecological role as ectomycorrhizal symbionts. A recent multi-locus phylogenetic study of the genus suggested that the cupulate group of    Helvella    was in need of comprehensive revision. In this study, all the specimens of cupulate    Helvella    sensu lato with ribbed stipes deposited in  HMAS  were examined morphologically and molecularly. A four-locus phylogeny was reconstructed using partial sequences of the heat shock protein 90, nuclear rDNA internal transcribed spacer region 2, nuclear large subunit ribosomal DNA and translation elongation factor 1-α genes. Three clades were revealed in    Helvella    sensu stricto. Twenty species were included in the analysis, of which 13 are distributed in China. Three new species,    H.   acetabuloides   ,    H.   sichuanensis    and    H.   tianshanensis   , are described and illustrated in detail. A neotype was designated for    H.   taiyuanensis   .    Helvella   calycina    is a new record for China, while    Dissingia   leucomelaena    should be excluded from Chinese mycota. Hsp90 and ITS2 are recommended as useful supplementary barcodes for species identifications of the genus.

A four-locus phylogeny of rib-stiped cupulate species of Helvella ( Helvellaceae , Pezizales ) with discovery of three new species