feverroot

from The Century Dictionary.

• noun A caprifoliaceous herb of the United States, Triosteum perfoliatum, said to have been used by the Indians as a remedy for fevers. The root is purgative and emetic. Also feverwort and horse-gentian.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun coarse weedy American perennial herb with large usually perfoliate leaves and purple or dull red flowers