White Crownbeard; Frostweed
Verbesina virginica /Aster Family
If you find the stalks of this plant on a very cold morning, you may see curls of ice coming out of the ground from the roots (called "iceflowers"). The sap and liquid from the roots expands and is forced upward into interesting curling shapes as it freezes.
Where seen: Great Smoky Mountains NP, Oak Ridge Greenways, widespread