Marisia - Maros Megyei Múzeum Évkönyve 29-30/2. (2010)
Botany
Mihaela SÄMÄRGHITAN and Rhamno-Prunetea classes by Ladislav Mucina, Georg Grabherr, Thomas Ellmauer (1993) [9, 10] classification system. For each syntaxonomic unit, territorial spreading, floristical composition, biological structure, phytogeographic elements and ecological behavior correlated with plants’ needs for humidity, temperature and soil pH are mentioned in the paper. A diploid and polyploid species graphic distribution was made as well. The present study includes all phytosociological data and attempts to realize a phytosociological classification of these shrubs. Nomenclature of species is consistent with Flora Europaea [18, 19]. Systematic classification of taxa was made according to Code de Tokyo, 1993 [2]. Syntaxonomic classification was based on consulting the most recent classification papers at European level [9, 10] and also on synthetic works developed on the vegetation of Romania [6, 16]. The habitat types are coded according to Interpretation Manual of Natura 2000 Romanian habitats, developed and printed in Romania under the PFiARE project “Implementation of NATURA 2000 in Romania” [8] and according to Habitats in Romania [7]. Results and discussions In the studied area three plant associations were described, belonging to Rhamno-Prunetea and Galio-Urticetea classes. GALIO-URTICETEA Passarge ex Kopecky 1969 Lamio albi-Chenopodietalia boni-henrici Kopecky 1969 Galio-Alliarion (Oberd. 1957) Lohmeyer et Oberd. in Oberd.et al.1967 Sambucetum ebuli Felföldy 1942 RHAMNO-PRUNETEA Rivas Goday et Borja Carbonell 1961 Prunetalia R.Tx.1952 Prunion spinosae Soó 1951 Pruno spinosae-Crataegetum Soó (1927) 1931 Prunion fruticosae R.Tx. 1952 Prunetum tenellae Soó 1947 Vegetation description In the studied area, hedges grown in the place of forests or at the edge of forests, on balks, etc., are represented by mesophilic clusters, blackthorn and hawthorn shrubbery considered to belong to Pruno spinosae-Crataegetum association. Subcontinental peripanonical shrubs of Dwarf Russian almond (Prunus tenellae) have been also identified. Sambucetum ebuli Felföldy 1942 Sambucus ebulus is dominant in some ruderal associations, forming high weeds. Besides the recognizing species of Sambucus ebulus, accompanying species like: Galium aparine, Urtica dioica, Artemisia vulgaris, Dactylis glomerata, are found in the composition of the coenoses, but generally, in clumps of Sambucus ebulus, few species are found. In the studied area, coenoses inhabit soils less compact and rich in organic substances, from the shores of the Mure? River and up the slopes, reaching altitudes of 360-400 m. In the 52
