Blue mystery

Walking too and from Edinburgh Castle Rock I kept an eye out for new flowers to add to my list. I noticed a tiny blue bud, and then another, an another. In fact there were lots of them. All of them tightly wound. There was not a single flower among a hundred or so. This had me mystified. Were all of these only just beginning to flower? Were they a species that curled up in the day time? Were they all spent and beginning to fade?

I still don't know the answer. The only one remotely like it in the flower book is Patersonia sericea, Native Iris, but it has flowers, not this twisted bud. The book says the flowers are fragile and last only one bright day in a succession of flowering from late winter to spring. Obviously it was not my day.