Radix Saposhnikoviae (Radix Ledebouriella Divaricatae) is used to release the exterior and expels wind: for headache, chills, and body aches due to externally-contracted wind-cold.

Pharmaceutical name:	Radix Saposhnikoviae (Radix Ledebouriella Divaricatae)
Botanical name:	Ledebouriella divaricata (Turcz); also known as Ledebouriella seseloides (Hoffm) or Saposhnikovia divaricata (Turcz) Shischk
Family:	umbelliferae
Where grown:	Helongjian, Jilin, Inner Mongolia, Hebei of China
When harvested:	spring or autumn
Japanese:	bofu
Korean:	bangp'ung
English:	ledebouriella root, siler
Literal English translation:	"guard against wind"
Properties:	acrid, sweet, slightly warm
Text in which first appeared:	Divine Husbandman's Classic of the Materia Medica