Open Access Policy
All abstracts and full texts, beginning from volume 1 (1960), are freely accessible in the PDF format on the journal website.
From 2020, all articles are distributed under the terms of the Creative Commons Attribution license (CC-BY,, which permits the Authors unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Authors grant also W. Szafer Institute of Botany, Polish Academy of Sciences right to produce printed volumes of the journal for sale.
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