Tragia cordata
Tragia cordata, commonly called the heartleaf noseburn, is a species of herbaceous plant in the spurge family. It is native to North America, where it is found in scattered in the southeastern United States. Its natural habitat is in rocky calcareous woodlands and prairies. This species is notable for its intensely painful stinging hairs. It is readily distinguished from other "Tragia" in the east by its vining habit and large heart-shaped leaves. It produces small green flowers in the summer and early fall.