Bupleurum stenophyllum

Bupleurum stenophyllum is a species of Bupleurum native to Japan, Korea, and mainland China; it is also introduced to Taiwan. Its root is used as a traditional medicine in East Asia known as Radix Bupleuri (柴胡).

Some sources treat Bupleurum falcatum as a species complex incorporating many East Asian species such as Bupleurum stenophyllum, Bupleurum scorzonerifolium, and Bupleurum chinense. However, molecular studies indicate that these are all separate species.

Varieties

• Bupleurum stenophyllum var. stenophyllum (2n = 26): Japan, Korea, Northeast China.
• Bupleurum stenophyllum var. kiusianum <small>Kitag. (</small>2n = 20): Japan (Kyushu and Yamaguchi), Korea, and Northeast China.
• Bupleurum stenophyllum var. leiocarpum <small>X.J.He & C.B.Wang (</small>2n = 26): Southwest China (Sichuan).
• Bupleurum stenophyllum var. obvallatum <small>(Nakai) Kitag.</small>: Japan (Iki).

References