“…since the middle of the 1970s we have been working with various aspects of Cryptocoryne: taxonomy (for an overview see Bastmeijer, 2016), morphology and pollination (Ørgaard & Jacobsen, 1998), cytology (Jacobsen, 1977a;arends et al, 1982), geographical distribution and habitat ecology via flora contributions (ipor et al, 2009;Jacobsen, 1985Jacobsen, , 1987li & Jacobsen, 2010;Jacobsen et al, 2012;othman et al, 2009), and molecular studies (othman, 1997;othman et al, 2009;ipor et al, 2010;Jacobsen et al, 2015a;rosazlina et al, 2015, rosazlina 2016rosazlina et al2017). We have undertaken a largescale hybridization programme, resulting in the production of more than 80 interspecific F 1 generations of which only a few have yet been published (ipor et al, 2015;Jacobsen, 1977bJacobsen, , 1981arosazlina, 2016;rosazlina et al 2017).…”