Zanthoxylum americanum
... that oil extracted from the common prickly-ash Zanthoxylum americanum has been used to treat "chronic rheumatism, typhoid and skin diseases and impurity of the blood"?
... that oil extracted from the common prickly-ash <i id="mwFbA"><b id="mwFbE"><a href="./Zanthoxylum_americanum" id="mwFbI" rel="mw:WikiLink" title="Zanthoxylum americanum">Zanthoxylum americanum</a></b></i> has been used to treat "chronic <a href="./Rheumatism" id="mwFbM" rel="mw:WikiLink" title="Rheumatism">rheumatism</a>, <a class="mw-redirect" href="./Typhoid" id="mwFbQ" rel="mw:WikiLink" title="Typhoid">typhoid</a> and skin diseases and impurity of the blood"?