Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Save this search Download search results Subscribe to news feed Your filters: cql: author="De Hert, Koen" or (type any "bookEditor journalEditor issueEditor" and editor="De Hert, K... Add to list Journal Article A1 Reproductive isolation and hybridization in sympatric populations of three Dactylorhiza species (Orchidaceae) with different ploidy levels Koen De Hert, Hans Jacquemyn, Sabine Van Glabeke, Isabel Roldán-Ruiz (UGent) , Katrien Vandepitte, Leen Leus and Olivier Honnay (2012) ANNALS OF BOTANY. 109(4). p.709-720