John, Please forgive me if I'm going over old and familar ground though I suspect your asking your question with respect to what has been done of late or is intended? But in case this isn't so - There was an article posted by Jim Lykos to Hamish with some discussion around this topic in January 2003 as per the link: http://pacificbulbsociety.org/pbslist/old.php/… Also worth noting on this subject is Les Hannibal's paper: ON THE ORIGIN OF AMARYGIAS, posted at the IBS site, which mentions some (back) crossing occuring. Do I understand correctly that interspecies crosses most often produce plants which will not set seed, or will set semi-fertile seed. I note that Les mentions this in his experiences with back crossing. A question on my mind is why is Bidwell's multiflora so fertile and its crosses when used as the Amaryllis seed parent.....was this a genetic contribution of the mysteric Amaryllis blanda or just chance luck (like DNA Dice??). (My other big question on multifloras would be - where did that long pseudo neck come from....was it perhaps in some crinum genes??) I'd also be very keen to hear of attempts or efforts to cross any of these plants or multiflora's. Regards, David.