The cross is 'krull's navy blue' am/aos x 'crystelle'hcc/aos. I'll have to get back to you with the source. I have to look back in my records. They were offering the fask all over the country for a rather high price, but I think that one flower is well worth it. I have bloomed out 15 from the batch and this is the first with this shade of color. So of course me being me... I had to back cross it with one of my huge violaceas that had a nice huge white flower. Hopefully, I can get at least one really big flower/plant out of a couple of flasks. Only five years or so until I find out! I'll get back to you with the source Julie as soon as I find it.