Eupatorium perfoliatum

Common Boneset ("Eupatorium perfoliatum") a species of plant. It belongs in the family Asteraceae. It is native to eastern North America. It blooms from July to October. Its flowers are white. They are rarely purple. It is found in habitats such as moist woodlands, and swamps. It grows to a height of 0.6 to 1.2 m (2 to 4 ft).