Puszcza Darżlubska is European Beech (Fagus sylvatica) forming thickets with pine and other coniferous trees. The area is covered mainly by coniferous forest in which the dominating tree is beech forming lowland groves. The beech is relatively young in the region. After the retreating glacier and the gradual warming of the climate around c.8,000 BC, the whole area was first covered by tundra. Along with the rise of temperature, the flora of the tundra gave way to new forest ecosystems in which most prominent were birches (Betula), pines (Pinus) and hazel (Corylus). The ecosystem of the primeval forest changed again with additional,
Carex sylvatica York and North Carolina, and to New Zealand, where it was first recorded in 1969. In its native range, "C. sylvatica" lives in deciduous woodlands on heavy soils; it is sometimes found in unwooded areas, but usually only as a relic of ancient woodland. In North America, it is generally found in disturbed areas within deciduous woodland. "Carex sylvatica" was first described by the English botanist William Hudson in his 1762 work "Flora Anglica". Hybrids have been reported between "C. sylvatica" and "C. strigosa" (in France) and between "C. sylvatica" and "C. hirta" (in Austria). Its English common name is