I believe they are a stylized flower that Al Stohlman came up with. Some were done prior to there being a lot of color. I did find a Pacific Dogwood in Al's 1972 book titled "Projects and Designs" (Page 46) and it too uses the stippled background as is often seen in his published patterns. Tandy still sells that book. They also have some other non-actual flower designs too. It may never have been destined to be colored but dyed.