I have been waiting for a reason to use Judy Mathieson's freezer paper technique for piecing one of these circular designs since Kerry (Dorry's sister) used it on a very complicated block for the International Round Robins. I decided to base my choices for the petals on the sunflower, with the darker gold on the inside. Dorry sent me the intensely dark green I saw in many of the images I found when I did a search. She also provided the fabric with the center flower. My mother gave me four small remnant pieces of the outer sunflower print many years ago. I believe she made placemats with them. The four pieces had the same repeat - she must have fussy cut her rectangles. That made it easy to come up with a dramatic sunflower frame for the flower.
This was a challenging block to put together - the result makes it worthwhile.