When the plant reaches about 2-3" in diameter, or even smaller if well grown, it has always been quite clear if it's true or a hybrid. There have been no variations to my knowledge that have made the hybrids appear even close to the true N. jacquelineae. The N. jacquelineae pitcher is just so distinctive even when juvenile, as photos posted on this forum have shown.
We have some N. jacquelineae x izumiae hybrids that are about 6" across now and they show a lot of promise to be spectacular and very colorful. I think that some natural hybrids are great and embody some of the best characteristics of the parents. N. x hookeriana and N. x trusmadiensis to name but two. Beauty is in the eye of the beholder though and not everyone would agree, I guess.
The N. clipeata x (eymae x clipeata) debate went on for a while, mainly because the plants had to be fairly mature before we could see that Andreas was right all along.
Anyone for a debate on true N. burkei? [img]http://www.**********.com/iB_html312/non-cgi/emoticons/biggrin.gif[/img]