abies alba acer pseudoplatanus alder arnica montana ashes austria bark barycz bearberry beech bielawa bohemia bracket fungus brandenburg bronze age bugleweed bystrzyca caltha palustris cardamine pratensis chojnik cloudberry coltsfoot cranberry czarna woda czech republic czechoslovakia czechs daphne mezereum deciduous deforestation duchy duchy of brzeg duchy of legnica duchy of nysa expulsion of germans after world war ii fir fungus german reich german language germans germany great moravia greater poland habsburg monarchy hazel hornbeam hoyerswerda jawor jizera mountains kaczawa kaczawskie mountains karkonosze kingdom of prussia kingdom of saxony larch legnica legnica voivodeship lime lower paleolithic lower silesian voivodeship lubin lubusz voivodeship lugii lusatian neisse maple margraviate of brandenburg mesolithic napoleonic wars neolithic niederschlesischer oberlausitzkreis northern group of forces nowa ruda nysa szalona oak oaks oberspreewald-lausitz oder river opole opole voivodeship paleozoic pine poland poles polish language polkowice potsdam conference province of lower silesia province of silesia province of upper silesia red army rudawy janowickie sands saxony second polish republic senecio vulgaris serpentinite silesia silesia walls silesian wars silingi specimen stobrawa subalpine sudetes szprotawa tertiary toadflax trzciniec culture tyniec upper silesia vandals voivodeship weimar republic wicker widawa wikimedia commons world war i world war ii zgorzelec zwierzyniec