I have seen these intriguing plants on many occasions and am fascinated by them, but I don't know what they are called. These were at Taringa, Queensland, at a unit complex I visited. I just had to take a photo of them. I don't think the photo does them justice.
If anyone knows, please let me know. They look like a variety of cactus.
If anyone knows, please let me know. They look like a variety of cactus.