Bartoszek, Wacław, Alina Urbisz, and Barbara Tokarska-Guzik. 2006. “Polygonum Polystachyum Wall. Ex Meissner in Poland: Status, Distribution, Habitats”. Biodiversity: Research and Conservation, no. 1-2 (June):86-88. https://doi.org/10.14746/biorc.2006.1-2.18.