This is a beautiful old cactus.The spines along the edges of the stems make it look almost painted. I asked the grower how long she'd had it and she could not remember besides "several years". She reports it as very hardy but neither oF us know a name for it.
Someone told me this is a Cathedral cactus, but I was unable to confirm by looking at google images. A lot of different plants are called cathedral and rather than a specific cactus, I believe the term cathedral must refer to the growth habit. It sure grows in a way that reminds me of cathedral spires.
