Carolina Horse-Nettle [Solanum carolinense] photos were taken on White Pine Road and Troy Hill Circle on 7 July 2013 and in Fletcher on 1 June 2019. It’s a member of the Potato (Solanaceae) family and genus Nightshade. Wildflowers of the Carolinas, pages 240-241, says it blooms in summer and grows in “dry sandy soils, disturbed areas, fields, lawns, and sun.” It also states “the fruit resembles a tiny tomato” and “is poisonous and has killed deer, cattle and humans.”
USDA Plants Listing: Solanum carolinense