Tropicals & Tender Perennials: It's an "Easter Cactus"......well not really, but, 1 by RUK

RUK wrote:
Now here comes the interesting stuff. The newly identified D. x hybridus Ackermannii, formerly known as Jefferson Davis opened the first flowers today. They open almost flat and they measure about 6!! inches across, and they are actually a bit luminescent.
(In comparison, the flower which I listed above from a new small plant posted at 9 pm on May 30. measures 4 inches. While it is pretty, it is not even in the same ball park.)
Have a look at the plant with some flowers open today and more to come.
Now the plant never shows triangular growth - points to species ackermannii
flowers open up almost flat - also points to species ackermannii
stigma lobe white - points to hybrid Ackermannii

I wonder if it was a hybrid back-crossed with the species???

Any thoughts?