I rescued some cactus bits that had fallen from this plant in June of 2016. The plant was confined by the fence.
Shortly before the plant was confined by the fence, it had several large and lovey white flowers.
I potted up the bits–
And now it has loads of new growth–
Actually, I recently removed a few starts to make more plants.
A couple of detail images of new additions to its growth. I like that they look sharp and pointy.
I suspect that the sharp pointy growth is for self propagation.