Xanthorhiza

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Xanthorhiza \Xan`tho*rhi"za\, n. [NL., fr. Gr. xanqo`s yellow +
     "ri`za root.] (Bot.)
     A genus of shrubby ranunculaceous plants of North America,
     including only the species {Xanthorhiza apiifolia}, which has
     roots of a deep yellow color; yellowroot. The bark is
     intensely bitter, and is sometimes used as a tonic.


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