In SH plot higher sexual shoots were also noted as well as greater number of flowers per shoot. The longer petioles (higher petiole average length), caused by maximization of light capture were noted in SH, than in NS plot. The number of aboveground units per cluster in both populations were similar. In both populations, clusters were situated in close vicinity, forming large aggregations. In NS plot-32 clusters were observed, whereas in SH plot 39 clusters occurred. The tallest plants attained 186 cm, whereas the layer of litter reached from 18 cm to 42 cm. The study plot named SH-" shaded " (6 000 m 2) was characterised by presence of tall perennials as well as grass and sedges forming large compact tussocks. The height of the tallest plant has not exceeded 98 cm, while the litter layer measured from 10 cm to 28 cm. The study plot labelled NS-" not shaded " (2 000 m 2) was prevailed by perennials with delicate procumbent or erect stems, small-tussock grass or short rosette-forb species. number and height of generative shoots and ba-sal leaves as well as the production of flowers, multi-follicles and follicles at stem-and cluster levels, were carried out between 20 on two patches of Molinietum caeruleae localized in Kraków vicinity (Southern Poland) and having different height of litter and herb layer. The investigations of morphological traits of Trollius europaeus i.e. It is the perennial forb, consisted of numerous dark green, deeply cut basal leaves and generative shoots with flowers composed of several multi-ovulate carpels. In Poland one of the strictly protected plant requiring an active conservation is globeflower Trol-lius europaeus L. The assessment of phenotypic plasticity expressed as the response to abiotic and biotic site factors is important for successful conservation of endangered and threathened species.
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