In another form I browse there's a photo of a plant that no one can identify. I'm hoping someone here can help. The flower has 5 petals colored pink to yellow in the center. The petals appear on edge in the middle twisting to flat on the outer limits. There are no pistils in the middle of the plant. The owner states it has only bloomed this one time in the last seven years. Any help id'ing this would be appreciated. Thanks!