Bupleurum chinense

Bupleurum Root, as its Latin appellation (Bupleurum chinense) suggests, is obtained from a plant native to China, where it is known as chai hu. It is one of the most important botanicals used in Traditional Chinese Medicine (TCM); such practitioners suggest that bupleurum root is effective in regulating one's qi, or "life-force," and like St. John's Wort, used in TCM for depression. 

*info from starwest