Hetty,
I don't know the real name. Purchased for Hirts Gardens a while ago. It's not Owl's Eye Cactus Plant -Huernia pillansii as stated. It seems to be H. penzigii. And crested is something new to me. Don't know if anyone else has one. Can't wait for it to bloom. Due to the crest, the flowers my be different as well.
