@article{Pykälä_Himelbrant_Kuznetsova_Alexeeva_2012, title={The lichen genera Thelidium and Verrucaria in the Leningrad Region (Russia)}, volume={49}, url={https://ojs.utlib.ee/index.php/FCE/article/view/13615}, abstractNote={<div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p><span>Lichens from the genera </span><em>Thelidium </em><span>and </span><em>Verrucaria </em><span>in the Leningrad Region (including Saint-Petersburg) are revised. Altogether five species of </span><em>Thelidium </em><span>and 31 of </span><em>Verrucaria </em><span>are confirmed for this region</span><span>. </span><span>Four species (</span><em>Thelidium minimum, T. olivaceum, </em><span><em>Verrucaria maculiformis</em> </span><span>and </span><em>V. trabalis</em><span>) are new to the Leningrad Region, and 17 species (</span><em>Thelidium aphanes, T. fontigenum, Verrucaria christiansenii, V. elevata, V. epilithea, V. helsingiensis, V. illinoisensis, V. inaspecta, V. invenusta, V. ligni- cola, V. pilosoides, V. polystictoides, V. pseudovirescens, V. rejecta, V. tectorum, V. tornensis </em><span>and </span><em>V. transfugiens</em><span>) are new to Russia. Dubious records for the Leningrad Region include </span><em>Verrucaria acrotella, V. floerkeana, V. fusca, V. nigrescens, V. obnigrescens, V. umbrinula </em><span>and </span><em>V. viridula</em><span>. </span></p></div></div></div>}, journal={Folia Cryptogamica Estonica}, author={Pykälä, Juha and Himelbrant, Dmitry E. and Kuznetsova, Ekaterina S. and Alexeeva, Nadezhda M.}, year={2012}, month={Oct.}, pages={45–57} }