“…Although hybrids in Potamogetonaceae were first recognized already in the late 19th century (see for a brief review), molecular evidence became available only during the past decades by using isozyme electrophoresis (e.g., Hollingsworth & al., 1995;Fant & al., 2001;Iida & Kadono, 2002;Kaplan & al., 2002;Kaplan & Wolff, 2004;Kaplan, 2007;Bobrov & Sinjushin, 2008) and DNA-based techniques (e.g., King & al., 2001;Fant & al., 2003;Kaplan & Fehrer, 2004, 2009Ito & al., 2007Ito & al., , 2014Du & al., 2009Du & al., , 2010Les & al., 2009;Zalewska-Gałosz & al., 2009, 2010Aykurt & al., 2017;Iida & al., 2018). While these studies focused on hybrids, a few of them performed also phylogenetic analyses (e.g., Les & al., 2009;Ito & al., 2014;Zalewska-Gałosz & al., 2018), but these include only taxa relevant for the identification of hybrids. Several studies focused on the phylogeny of Potamogetonaceae (Iida & al., 2004;Lindqvist & al., 2006;Wang & al., 2007;Zhang & al., 2008;Ito & Tanaka, 2013).…”