This is a large and spectacular flower. It is endemic to high elevation rocky areas in the Sierra Nevada Mountains. There are five long spurs on the back of it. Each spur is a long tube which opens out on the front of the flower. The nectar is way down in there where only a hummingbird or a butterfly can get at it. But some critters cheat and just go around back and bite off the end. Picture #453 shows the spurs well (you can get there from the MAP link below).     Aquilegia pubescens (Buttercup family)