桂的考证

Textual Research on Cinnamomum Eassia Blume

桂的药用已有悠久历史 ,其原植物为樟科肉桂CinnamomumcassiaPresl。汉唐之间所用的牡桂、桂都是肉桂树的大枝和小枝的皮部 ,后世才用干皮。桂枝在汉唐时期与牡桂、桂是同一药材 ,当归也称肉桂。宋代开始才逐渐改用细嫩枝条入药 ,即今之桂枝。

Cinnamomum Eassia Blume has been used as a drug for a long time. In the Tang Dynasty, the fresh bark was used as the drug known as Mugui or Jungui and later dried bark was used. Ramulus Cinnamomi used in the Han and Tang Dynasties was the same drug as Mugui and Jungui. Since the Song Dynasty, thin twigs have been used as the drug.