Marisia - Maros Megyei Múzeum Évkönyve 36/1. (2016)

Botany

Phytosociological study ofLigularia sibirica (L.) Cass, habitats from Zänoagei Gorges (Bucegi Mountains), Romania

The Cirsio waldsteinii-Heracleetum transsilvanici Pawl, et Walas is framed in: MULGEDIO-ACONITETEA Hadac et Klika in Klika et Hadac class that groups hygrophilic species such as tall mountain weeds from the upper montane level, having the characteristic species: Rumex alpestris and Carduus personatus-, ADENOSTYLETALIA ALL1AR1AE Br.-Bl. 1931 order which groups hygrophilic megaphorbiets; Adenostylion alliariae Br.-Bl. 1925 alliance that is found on moist and nutrient rich colluvial soils with characteristic species such as: Alnus viridis, Geranium sylvaticum, Cortusa matthioli and Valeriana officinalis ssp. sambucifolia. The present association is characteristic for eutrophic marshes, situated on acidophilic substrate. (Fig. 1.) [8], [10], [16]

The Natura 2000 habitats where the studied plant association is found is 6430 Hydrophilous tall herb fringes communities of plains and of the montane to alpine levels

(with the following correspondences: EMERALD: 37.7 Humid tall herb fringes, PALHAB: 37.716 Continental mixed riverine screens, EUNIS: E5.414 Continental river bank tail-herb communities dominated bу Filipendula). [11, 14] Bucegi Natural Park, the association is encountered along the lower mountain valleys of the Ialomita river.

Fig. 1: Cirsio waldsteinii-Heracleetum transsilvanici Pawl, et Walas 1949 and Ligidaria sibirica (L.) Cass, in Zänoagei Gorges — Dambovita county

Identification of Ligularia sibirica (L.) Cass, species in the plant association was conducted during 2015-2016 period, through phytosociological surveys in Zänoagei Gorges, Scropoasa and Seven Springs Waterfall.

To achieve the objective of the present paper it had been analysed the accompanying flora of the relict species. The synonyms and coenotic integration of studied species, were established using the Flora Europaea database [3], completed with the following bibliographycal sources: [4], [5], [13], [19]. As for genetic structure, byoforms and geo-elements analysis, was followed Flora cormofitelor spontane si cultivate din Romania [17].

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