The dried rhizome of the genus Acanthopanax senticosus. Eleutherococcus senticosus is a deciduous shrub 1–6 m tall that blooms from June to July and fruits from August to October. There is a specific aroma, slightly pungent taste, slightly bitter and astringent. It is mainly distributed in northeast Asia, Siberia. Its roots and rhizome can be medicated. It grows in hillside forests and roadside shrubland; Medicine gardens are often cultivated. It is distributed in central, eastern, southern and southwestern China.