Nat. ord., Ulmaceae.
Characters. - A tough, brownish-yellow bark, about half a line thick, without smell; taste mucilaginous, slightly bitter and astringent. Its decoction is turned green by Perchloride of Iron, and precipitates with a solution of Gelatine.
This is admitted into Buchner's and Jahr's Pharmacopoeias, and is referred to by Hahnemann in his Lesser Writings as causing eruptions on the skin.
Part employed. - The inner bark of two-year-old branches.
Preparation. - Tincture (proof spirit).