Acta Mycologica DOI: 10.5586/am.1087 ORIGINAL RESEARCH PAPER Publication history Received: 2016-04-02 Accepted: 2016-12-21 The revision of specimens of the Cladonia Published: 2017-01-16 pyxidata-chlorophaea group (lichenized Handling editor Maria Rudawska, Institute of Dendrology, Polish Academy of Ascomycota) from northeastern Poland Sciences, Poland deposited in the herbarium collections of Funding Research funded by the Polish University in Bialystok Ministry of Science and Higher Education within the statutory research. Anna Matwiejuk* Competing interests Department of Plant Ecology, Institute of Biology, University of Bialystok, Konstantego No competing interests have Ciołkowskiego 1J, 15-245 Bialystok, Poland been declared. * Email:
[email protected] Copyright notice © The Author(s) 2017. This is an Open Access article distributed Abstract under the terms of the Creative Commons Attribution License, In northeastern Poland, the chemical variation of the Cladonia chlorophaea-pyxi- which permits redistribution, data group was much neglected, as TLC has not been used in delimitation of spe- commercial and non- cies differing in the chemistry. As a great part of herbal material of University in commercial, provided that the article is properly cited. Bialystok from NE Poland was misidentified, I found my studies to be necessary. Based on the collection of 123 specimens deposited in Herbarium of University Citation in Bialystok, nine species of the C. pyxidata-chlorophaea group are reported from Matwiejuk A. The revision of NE Poland. The morphology, secondary chemistry, and ecology of examined li- specimens of the Cladonia pyxidata-chlorophaea group chens are presented and the list of localities is provided. The results revealed that (lichenized Ascomycota) from C.