@article{Hanso_Drenkhan_2010, title={Two new Ascomycetes on twigs and leaves of Silver birches (Betula pendula) in Estonia}, volume={47}, url={https://ojs.utlib.ee/index.php/FCE/article/view/13647}, abstractNote={<div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p><em>Cryptosporella betulae </em><span>(</span><span>Gnomoniaceae, Diaporthales</span><span>) and </span><em>Pleomassaria siparia </em><span>(</span><span>Pleomassariaceae, Pleosporales</span><span>), the first both in teleo- and anamorphic (</span><em>Disculina betulina</em><span>), the second only in its anamorphic stage (</span><em>Prosthemium betulinum</em><span>) are recorded for the first time in Estonia. In summer 2008 first disease symptoms were observed; in summer 2009 </span><span>C</span><span>. </span><span>betulae </span><span>was identified as a new species and as an obvious pathogen, causing these symptoms on young Silver birches (</span><em>Betula pendula</em><span>). At the following winter both anamorphic fungi were found abundantly sporulating on thin branches and twigs, fallen into the snow from mature Silver birches. In May 2010 the teleomorphic </span><em>C. betulae </em><span>was first time recorded on the birch leaves, fallen last autumn. Pathogenicity of </span><em>P. betulinum </em><span>is still not known. Taxonomic relevance of the fungi together with the possible connection of the findings with the recent meteorological extremities in Estonia is shortly discussed. </span></p></div></div></div>}, journal={Folia Cryptogamica Estonica}, author={Hanso, Märt and Drenkhan, Rein}, year={2010}, month={Sep.}, pages={21–26} }