A turnip, the purple topped kind, that makes me think of a long story:
When I was finishing college, my father bought one last boat. Its name was Triumph. The boat had… issues. The worst was that it was impossible to turn while under sail. It was a sail boat. This was bad. In frustration, we called it the Turnip, instead of Triumph, and I designed a mast-head flag for it that showed a purple-top turnip with baroque foliage on a blue background. I still have the drawing around in a sketchbook, although we managed to sell the boat before I made the flag.
So I was kind of channeling the idea of a heraldic turnip when I got to the leaves.