Ring Around The Rosy, Pocket Full Of...

...Fishhook Barrel cactus flowers.

This is what I have been waiting for. A ring.  I have gotten a couple of  beautiful individual flowers (click separately) but this, even though I caught it early before they were all completely open, was the coup de grâce.

PS See the inside buds?  If they all bloom at the same time there will be another ring.