This is one of my Anthurium radicans crosses. I bought it in about 2003-2004 at Tropiflora in Sarasota labeled "A. radicans x dressleri". It is most likely actually Radicans x luxurians...there were a mislabeling event around that tie at the tissue culture lab and many of the specimens sold as rad x dress are actually rad x lux.
ANYWAY. Radicans x luxurians is known to produce fertile seeds, but not very often. Rad x dress is believed to be sterile. No one has ever gotten viable seed from it.
I think I have managed to pollinate mine with A. besseae aff. I have berries forming. Whether they will prove to be viable only time will tell!