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The taxonomic position of the genus Heydenia (Pyronemataceae, Pezizales) based on molecular and morphological data

Leuchtmann, Adrian ; Clémençon, Heinz

In: Mycological Progress, 2012, vol. 11, no. 3, p. 699-710

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    Title
    • The taxonomic position of the genus Heydenia (Pyronemataceae, Pezizales) based on molecular and morphological data
    Author
    • Leuchtmann, Adrian. Ökologische Pflanzengenetik, Institut für Integrative Biologie, ETH Zürich, Universitätstrasse 16, CH-8092, Zürich, Switzerland
    • Clémençon, Heinz. Musée botanique cantonal, Avenue de Cour 14bis, CH-1007, Lausanne, Switzerland
    Document Type
    • Postprint
    OAI-PMH Identifier
    • oai:doc.rero.ch:314074
    Summary
    Molecular and morphological data indicate that the genus Heydenia is closely related to the cleistothecial ascomycete Orbicula (Pyronemataceae, Pezizales). Observations on the disposition and the immediate surroundings of immature spores within the spore capsule suggest that the Heydenia fruiting bodies are teleomorphs producing early evanescent asci in stipitate cleistothecia. The once advocated identity of Heydenia with Onygena is refuted on molecular grounds. Onygena arietina E. Fischer is transferred to Heydenia