PCA of relev├ęs of alluvial/waterside Po Plain and karstic Ulmus minor-rich forests and Fraxinus angustifolia subsp. oxycarpa swamp forests of Frangulo-Fraxinion (First component: 18.31 % of total variance, second component: 11.83 %). Relev├ęs are grouped and labelled according to the dendrogram of Fig. 5. A: Polygonato-Quercetum roboris; B: Salvio glutinosae-Quercetum roboris ass. nov.; C: Vinco minoris-Ulmetum minoris ass. nov.; D: Lamio-Ulmetum minoris; E: Rhamno catharticae-Ulmetum minoris ass. nov.; F: Valeriano-Fraxinetum oxycarpae; G: Cladio-Fraxinetum oxycarpae.

  Part of: Poldini L, Vidali M, Castello M, Sburlino G (2020) A novel insight into the remnants of hygrophilous forests and scrubs of the Po Plain biogeographical transition area (Northern Italy). Plant Sociology 57(2): 17-69. https://doi.org/10.3897/pls2020572/01