It is easy to see how the berry could develop a double ovary by the way these 2 flowers grow so closely. I was interested to see how fuzzy the flowers are too!
Madder Family Length: 4" - 12" The double ovaries of these twin flowers form a single red berry (See Fruits and Berries gallery). This low-growing vine is very common along trails in east Tennessee. Perennial Where seen: Frozen Head SP, Piney Falls, Piney River, Laurel-Snow Pocket Wilderness, Great Smoky Mountains NP, Cherokee National Forest, Norris Dam SP, Pickett SP