Morphological variability of Fraxinus angustifolia Vahl in the north-western Balkans
Fraxinus angustifolia Vahl is a species native in the north-western Balkans, where it has a divided range.Most of its range is located in flood-prone riparian sites in the Pannonian plain but the species is also found on humid sites along some rivers in the Submediterranean region.We analysed morphologic variation within and between five population