Department of Botany and Molecular Evolution, Senckenberg Research Institute, Senckenberganlage 25, D-60325 Frankfurt/Main, Germany, email: juraj.paule@ senckenberg.de; National Centre for Biosystematics, Natural History Museum, University of Oslo, Blindern 1172, NO-0318, Oslo, Norway; Department of Botany, Faculty of Science, Charles University in Prague, Benátská 2, CZ-128 01 Prague, Czech Re...