This is not influenced by soil pH. Wayne Shantz and Gordie Leroux are both on the trail of a good violet purple cactus. Both are using Kenora Challenger which looks to be I1or2. Blue in open at Eugene '97. I would estimate that it is B2 I2or3, and that it would make a great breeding mate, if compatible. It has broadly revolute petals that do not quill.
Color is rosy purple with violet tones on petal reverse and tip.
Goes to TG 2000. Spike X Klondike. You can see the depth and petal count. Stellyvonne X Pink Jupiter. There may be more than one dark foliage pigment.