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Occurrence of Chimaphila umbellata (Ericaceae) in central eastern Poland. Fragmenta Floristica et Geobotanica Polonica 8: 113–119. Kraków. PL ISSN 1640 629X. ABSTRACT: The list of 180 stations of Chimaphila umbellata (L.) W. P. C. Barton in eastern central Poland is given in the paper. The most numerous stations have been found in the Puszcza Biała Forest (Międzyrzecze Łomżyńskie), in Bug river valley (Podlaski Przełom Bugu) and in Siedlce environs (Wysoczyzna Siedlecka). It is the result of domination of coniferous forests in this areas and accuracy of area examination. The preliminary data on ecology of population of Ch. umbellata in range Niwiski near Siedlce are also given.