Ivana B. Janković, Milica M. Drobac and Dmitar V. Lakušić
During the past few years, the isophylloid Campanula pyramidalis complex has been the subject of studies aimed at an improved understanding of the relationships within it. The center of distribution of the C. pyramidalis complex is in the Balkan Peninsula with some smaller parts of the area located in the south Apennines. Although 21 taxa of the C. pyramidalis complex were described, only four species are accepted: C. pyramidalis, C. versicolor, C. secundiflora and C. austroadriatica. In the present study, we propose compounds of the methanolic leaf extract as possible chemotaxonomic markers for the C. pyramidalis complex. Eleven flavonoids and two phenolic acids were detected in leaf extract using high-performance liquid chromatography with diode-array detection analysis. The investigated taxa of the C. pyramidalis complex differ in terms of the composition of the methanolic leaf extract. clustering of investigated taxa is not completely consistent with the previously reported molecular and morphometric data.
Eva N. Kabaš, Antun A. Alegro, Nevena V. Kuzmanović, Ksenija M. Jakovljević, Snežana S. Vukojičić and Dmitar V. Lakušić
Phytosociological characteristics of grassland communities above serpentines (order Halacsyetalia sendtneri H. Ritter-Studnčka 1970) in Serbia, are analyzed according to Braun-Blanquet methodology. In order to detect the basic floristic differentiation of analyzed communities ordinary correspondence analysiswas applied. Cluster analysiswas also performed to see the structure and separation of the communities based on the floristic composition. In order to determine diagnostic species, fidelity indices with presence/ absence data and the size of all groups standardized to equal size were calculated. The new association Stipetum novakii is described in open rocky serpentine grasslands in Brdjani Gorge.