You're looking at *two* (2) Christmas cacti. One is the obvious macro that reaches from the upper left to the lower right corners. The second is the red *haze* which how the flower looks that is actually laying against the face of the macro lens. This technique, which I call a shoot through, can produce some interesting images but there's a lot of randomness to the results depending on just how the foliage touching the lens arranges itself, the aperture (needs to be wide open or nearly so) and the distance to the in focus portion of the image. In this image, the "thickest" portion of the blossom that touched the lens was concentrated at the upper left and accounts for the nearly opaque red coloring in this area. The lower right portion of the lens had nearly nothing in front of it thus allowing the end of the distant (12") in-focus flower to "break into the clear" out of the red haze. In between these two extremes is a gradual "lifting of the haze".
Give it a try.