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Circinaria nimisii (Megasporaceae, lichenized Ascomycota), a new manna lichen from Greece

Published online by Cambridge University Press:  22 September 2023

Mohammad Sohrabi*
Affiliation:
The Museum of Iranian Lichens, and Department of Biotechnology, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran
Steven D. Leavitt
Affiliation:
Department of Biology and M. L. Bean Life Science Museum, Brigham Young University, Provo, UT 84602, USA
Walter Obermayer
Affiliation:
Institute of Biology, Division of Plant Sciences, NAWI Graz, University of Graz, A-8010 Graz, Austria
Helmut Mayrhofer
Affiliation:
Institute of Biology, Division of Plant Sciences, NAWI Graz, University of Graz, A-8010 Graz, Austria
*
Corresponding author: Mohammad Sohrabi; Email: sohrabi@irost.org

Abstract

The manna lichens, a group of vagrant species with subfruticose and subfoliose thalli in the genus Circinaria Link, have received attention for millennia. Here, a new manna lichen species, Circinaria nimisii sp. nov. (Megasporaceae), is described and illustrated. This vagrant lichen is found on Mount Olympus in Greece and is the fourth known manna lichen in Europe. The new taxon is characterized by its subfruticose, densely-branched thallus with a muddy, earthy colour, whitish pseudocyphellae on tips of branches, mature apothecia distinctly adnate to stipitate, and paraplectenchymatous cortex tissue. Molecular sequence data from the standard barcoding marker (nrITS) also corroborate the distinction of this species from closely related congeners. Finally, Agrestia zerovii, previously known only from its type locality in Ukraine, is proposed as a new synonym of Circinaria hispida.

Type
Standard Paper
Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of the British Lichen Society

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