The answer is simple. The small, white and dark green decals depict a buckeye leaf. The stickers, which are about the size of a quarter, are "applied to Ohio State football helmets for big plays ...

Time, TV schedule to watch Week 14 game The objects on Ohio State’s helmet stickers are buckeye leaves. Buckeye leaves grow on buckeye trees, the official state tree of Ohio. The fruit of ...

Ohio State's decal is a green leaf. The image is of a leaf from the buckeye tree, initially drawn in 1950. It first started appearing on helmets in 1967. So, how do you represent a mascot with a nut?