Diversity of macrofungi in the Greek islands of Lesvos and Agios Efstratios, NE Aegean Sea
Dimou, Dimitrios M.; Polemis, Elias; Konstantinidis, Georgios; Kaounas, Vasileios; Zervakis, Georgios I.
Data on the occurrence of macrofungi in the islands of the Aegean Archipelago are still scarce and fragmentary. Although the islands of Lesvos and Agios Efstratios (northeast Aegean Sea) are of particular biogeographic interest by serving as "land-bridge" between Asia Minor and Europe, very limited information is available regarding their fungal diversity. This long-term study revealed the presence of 26 and 162 taxa of larger ascomycetes and basidiomycetes respectively in these two islands, which belong to 125 genera. The occurrence of genera Leucoinocybe, Calongea and Picoa is reported for the first time in Greece. In the pertinent annotated inventory, 29 taxa constitute new records for the country, while other 96 taxa are reported on new habitats, substrates and/or hosts. Brief descriptions of morphological features and key diagnostic characters are provided for the most interesting findings, with emphasis on those cases where notable deviations were observed in respect to pertinent literature reports. Of special importance is the recording of several ectomycorrhizal fungi associated with typical components of the East Mediterranean xerophytic vegetation. Five of them are reported for the first time from Greece, i. e., Hygrophorus pseudodiscoideus, Hymenogaster luteus, Hysterangium clathroides, Picoa juniperi and Terfezia olbiensis, all growing near plants of the family Cistaceae.