Thanks.
Ed,
I don't remember there being any wind. These are in a sort of sheltered place where I work. I like the spiral shape of the flowers before they unfurl. Probably a Fibonacci in there somewhere if you look hard enough. I wander around the grounds of my office building during lunch and look for new things or new light. This of course was just in the shade, so nothing special about that.
Bryan,
I think these are in the aloe family. I think the flower of the prickly pear grows on the top of the plant and then makes a red bulbous fruit. Some of the native cultures here in the SW make a sort of prickly pear preserve out of them.