The root of the plant rhatany, Krameria triandra, from which a medicinal extract is prepared (more fully ratanhia root); (also) the plant itself.
More fully rhatany root. The astringent root of any of several South American shrubs of the genus Krameria (family Krameriaceae), used medicinally…
the astringent extract of the Seaside Grape, Coccoloba uvifera.
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