gall-of-the-earth

from The Collaborative International Dictionary of English v.0.48

gall-of-the-earth \gall-of-the-earth\ n.
   A common perennial herb ({Nabalus serpentarius}) widely
   distributed in southern and eastern U. S., having drooping
   clusters of pinkish flowers and thick basal leaves suggesting
   a lion's foot in shape; sometimes placed in the genus
   {Prenanthes}.

   Syn: lion's foot, gall of the earth, {Nabalus serpentarius},
        {Prenanthes serpentaria}.
        [WordNet 1.5]