One of my N. [(mirabilis "wing" x ampullaria "black miracle") x (mirabilis "globosa" x ampullaria "black miracle")] has a strange mutation that appears between the wings of the pitchers, it reminds me of the scene from Alien!
Thanks! I know what you mean about the dark purple, I have a Brasiliorchis schunkeana flowering(below pic), it looks fairly black to the naked eye, but most pictures bring out the reds.