Lichenized species of Omphalina (Tricholomataceae) in the Iberian Peninsula |
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| Institution: | 1. División Paleobotánica, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (MACN-CONICET), Av. Ángel Gallardo 470, C1405DJR Ciudad de Buenos Aires, Argentina;2. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA, CONICET-UNCo), Av. de los Pioneros 2350 (8400), S.C. de Bariloche, Río Negro, Argentina;3. Sede Alto Valle y Valle Medio, Universidad Nacional de Río Negro, Isidro Lobo 516, Gral. Roca, Río Negro, Argentina;4. División Plantas Vasculares, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (MACN-CONICET), Av. Ángel Gallardo 470, C1405DJR Ciudad de Buenos Aires, Argentina;5. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina;1. IVG, Institute for Combustion and Gas Dynamics – Reactive Fluids;2. IVG, Institute for Combustion and Gas Dynamics – Fluid Dynamics;3. CENIDE, Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Carl-Benz-Str. 199, 47057, Duisburg, Germany |
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| Abstract: | Abstract:A taxonomic revision of the lichenized species of the genus Omphalina in the Iberian Peninsula is presented, based upon fungal and lichen herbarium material, as well as on fresh collections. Relevant morphological and ecological features are discussed and a diagnostic key is provided. Four lichenized species, O. ericetorum, O. hudsoniana, O. meridionalis and O. velutina, are recognized. A squamulose vegetative thallus (Coriscium -type) is present only in O. hudsoniana, while the other three species form a thallus of hyphal globules (Botrydina -type). Anatomical features of the vegetative thallus cannot be used to distinguish between these last three species. Whilst O. hudsoniana is known only from the montane belt of the Eurosiberian Region and O. meridionalis seems to be restricted to the Mediterranean Region, living in more or less humid sites of the Supramediterranean belt, the other two species, O. ericetorum and O. velutina, are widespread. |
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