At the top of this picture are two flowers of Viola arvensis. I tried to size it to around life size when you open the picture. A whole flower of Viola arvensis is so tiny that it would fit inside a regular kernel of field/dent corn. Below the two flowers of Viola arvensis are ten different grandchildren (second generation) from crosses with pansy. Notice the extremes in variation for size and shape of various parts. The upper left one has very broad rounded sepals that stick out all around the flower.