Figure 3a from: Shcherbakov AV, Kazakova MV, Lyubeznova NV, Pastushenko AD, Seregin AP (2021) A grid-based database on vascular plant distribution in the Meshchersky National Park, Ryazan Oblast, Russia. Biodiversity Data Journal 9: e75892. https://doi.org/10.3897/BDJ.9.e75892 - Shcherbakov, Andrey (2021)