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Northern red oak (Quercus rubra) is the most common alien tree species in Polish forests that is considered as an invasive one. It is native to North America. Negative impact of Q. rubra on natural habitats in Europe is well−known, but there is still a lack of information about correlations between red oak and individual species or groups of plants. Especially knowledge about impact of Q. rubra on...
Podejźrzon marunowy Botrychium matricariifolium (Retz.) A. Braun ex W.D.J. Koch. jest niezwykle rzadkim gatunkiem paproci z rodziny nasięźrzałowatych Ophioglossaceae, w ostatnich 30 latach potwierdzanym w Polsce na około 30 stanowiskach. Spośród wszystkich znanych miejsc występowania podejźrzona marunowego w polskich Karpatach aktualnie obserwowany jest on wyłącznie na jednym – w Beskidzie Małym....
One of the many areas where Matteucia struthiopteris (L.) Tod. is found in Poland is the upper part of the Vistula River Valley, mainly in the Silesian Foothills and the Silesian Beskid. From 2005 to 2010, floristic and phytosociological studies were carried out to determine the presence of ostrich fern stands and plant communities that contain this species. As a result of this study, 31 sites on...
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