Kokořínsko Protected Landscape Area

Flora and Vegetation

In Kokořínsko as we know it today, the great majority of the vegetation has been influenced by human activity. The more gentle slopes of the numerous valleys, with richer soil as a result of loess sediments deposited on them, were often used for grazing, terraced into small fields or planted with fruit trees. Many stream valleys were modified by the building of fishponds and mills, which also created a number of new biotopes. The former alluvial forests in the wider stream valleys were felled and converted into meadows, which were formerly cut for hay. After many of these alluvial meadows were abandoned, they became overgrown with common reed (Phragmites australis) or ribbon grass (Phalatris arundinacea) and later with alders. This process of natural development where meadows change into forests is known as succession. Naturally forest-free areas were only found in a few places in Kokořínsko: the dry (white) slopes at Komorsko, the rocky slopes of vulcanite peaks (the tops of Ronov at 552.4 metres, Korecký vrch at 464.5 m and Vysoký vrch at 426 m), the rocky edges of the sandstone and on the contrary damp rocks with falling mossy humus (Apatyka rokle ravine) and fens (Vrabcov). Non-forested communities (except for weeds) do not cover a large area of the PLA, but they represent a notable diversity of plant species.

Several interesting botanical species:

Stillwaters along the Pšovka river play host to growths of the white water lily Nymphaea candida and water arum (Calla palustris). In fenland and wetland communities on the alluvial plains of the Liběchovka, Pšovka, Nedamovský potok and other streams we can find the spike-sedge Eleocharis quinqueflora, rough horsetail (Hippochaete hyemalis), marsh helleborine (Epipactis palustris), the sedge Carex lepidocarpa, marsh lousewort (Pedicularis palustris), spring snowflake (Leucojum vernum), adderstongue (Ophioglossum vugátám), broad-leaved marsh orchid (Dactylorhiza majalis), the common spotted orchid (Dactylorhiza longebracteata), Davall’s sedge (Carex davalliana), globe flower (Trollius altissimus) or bogbean (Menyanthes trifoliata).

On the poor sandy soils of the southern part of the Kokořínsko valleys we can find populations of the horsetail Equisetum ramosissima. On rocky edges and slopes with a southern exposition which are covered with loess deposits we can find xerophilous and thermophilous plant species such as the Bohemian small pasque flower (Pulsatilla pratensis subsp. bohemica), the iris (Iris aphylla), St. Bernard’s lily (Anthericum liliago), the feather-grass Stipa joannis, yellow flax (Linum flavum), cross gentian (Gentiana cruciata), fringed gentian (Gentianopsis ciliata), snowdrop windflower (Anemone sylvestris), burning bush (Dictamnus albus), goldilocks aster (Linosyris vulgaris) and the bellflower Campanula bononiensis. Among other rare species occuring in the PLA we can find autumn gentian (Gentianella amarella), dwarf milkwort (Polygalla amarella), blue-stem grass (Bothriochloa ischaemum), rue-leaved saxifrage (Saxifraga tridactylites), tassel hyacinth (Muscari comosum) and in sandy areas clubawn grass (Corynephorus canescens).

Remnants of the natural herb-rich beech forests support populations of the helleborine Epipactis muelleri, early purple orchid (Orchis purpurea) together with dark red helleborine (Epipactis atrorubens), bastard balm (Melittis melissophyllum) and white helleborine (Cephalanthera damasonium). In deciduous and mixed forests on vulcanite slopes and in deeply carved valleys plants such as martagon lily (Lilium martagon), lesser butterfly orchid (Platanthera bifolia) and greater butterfly orchid (Platanthera chlorantha) grow. In damp ravines and gorges with a climate inversion we can find long beech fern (Phegopteris connectilis) and interrupted club moss (Lycopodium annotinum) and fir clubmoss (Huperzia selago) also occur in the Kokořínský důl valley.

Among the interesting field weeds growing in the territory we could mention corn buttercup (Ranunculus arvensis), annual woundwort (Stachys annua), blue pimpernel (Anagallis foemina), lesser snapdragon (Misopates orontinum) and summer pheasant’s eye (Adonis aestivalis).