Marisia - Maros Megyei Múzeum Évkönyve 35/2. (2015)

Botany

The lilac forest from Ponoarele. Phytosociologic considerations

— by the soil reaction, within both associations, the low-acid-neutrophilous species are more numerous (ass. Syringo-Fraxinetum orni - 52.63%; ass. Syringo-Carpinetum orientalis -60.89%).

Fig. 3: Ecological indices of Syringo- Fraxinetum orni association

Fig. 4: Ecological indices of Syringo-Carpinetum orientalis association (Matacä, 2005)

Out of 77 species (Syringo-Fraxinetum orni association), 50% are diploid, 39% of them are polyploid, 5% of them are diplo-polyploid species and for 5 species the number of chromosomes hasn’t been identified (Fig. 5). The diploid index (I.D. = 1.26) shows the relict character of the association.

Out of 179 species (Syringo-Carpinetum orientalis association), 44.69% are diploid, 36.87% are polyploid, 2.79% are diplo-polyploid and for 28 species the number of chromosomes hasn’t been identified (Fig. 6). The diploid index (I.D. = 1.56) confirms the relict character and concurs with the chorologic situation of the association.

Fig. 5: Karyological spectrum of Syringo- Fig. 6: Karyological spectrum of Syringo-Fraxinetum orni association Carpinetum orientalis association (Matacä, 2005)

Within the floristic elements’ spectrum of Syringo-Fraxinetum orni association (Fig. 7), along with the Eurasian (33%) and European (19%) species, the significant presence of the Mediterranean species (16%) is noticed, followed by the Balkan (4%) and Dacian species

(4%).

Within the floristic elements’ spectrum of Syringo-Carpinetum orientalis association (Fig. 8), along with the Eurasian (27%) and European (14%) species, the significant presence of the Mediterranean species (13%) is noticed, as well as the Pontic (11%) and Balkan (10%), followed by the Carpathian (5%) and Dacian (4%) species.

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