Additions to the knowledge of the genus Helvella in Europe. New records and de novo description of five species from the Nordic region

Abstract

I. Skrede, S.B. Løken, C. Mathiesen, T. Schumacher. FUSE volume 11: 71-84
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Abstract: Helvella is a species-rich genus, forming a large variation of astounding ascocarps in many different habitats. During the last decade, molecular markers and morphological characters have been combined to delimit and identify cryptic species in this genus. We report on a list of 54 species of Helvella s.s. in the Nordic region and describe five new species, i.e. H. bresadolae, H. convexa, H. japonica, H. nordlandica and H. oroarctica. The morphological and molecular characteristics of the new species and the emended / hypocrateriformis, / fibrosa-macropus, and / fallaxpezizoides lineages of Helvella s.s. are shortly commented upon. Further we include a discussion of the distribution of species in the Nordic region based on a large set of studied collections. The ecological versatility and variable geographic patterns of these species indicate that cryptic species may have contrasting ecology in their local habitats.
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