How can you tell the difference between Crypto wendtii red from undulata. For a long time, I thought I had wendtii, but I’m not sure now as pics of undulata look similar and it is described as belonging to the wendtii family. There is also wendtii tropica that looks similar. I guess unless you grow them side by side, it’s hard to tell the difference. The one wendtii that stands out in color is flamingo. I want to try it but heard that it is a difficult plant.