crinkleroot

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A woodland plant (Cardamine diphylla) in the mustard family, occurring in eastern North America and having a thick rhizome, trifoliolate leaves, and clusters of white or pinkish flowers.

from The Century Dictionary.

• noun The pepperroot, Dentaria diphylla.

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

• noun North American herb with pungent scaly or toothed roots