Very interesting photos Andrew.
My first thoughts were of the complexity involved within the body of the inflorescence to exhibit such uniformity and structure,with all the colors involved.Especially the feature of changing petal color from yellow to black.
We mostly take these things for granted,but your close-ups really bring out the best of the unusual features of this species. The plant is in a constsntly changing blooming cycle,and moving along at warp-speed,from the plants point of view. Very nice !
Bob

I admit when my plant bloomed, I was initially disappointed with the flower, having been ignorant of what to expect. As your photos show, the persistent flower spike eventually draws you in for a closer, more rewarding look. Thanks for the fine photos.
Kim