[[File:Achyranthes aspera.jpg|thumb|Alt=Achyranthes aspera|300px|left|Achyranthes aspera]]
Other Names : Chaff-flower, prickly chaff flower, devil's horsewhip, 粗毛牛膝, 土牛膝, 倒扣草, अपामार्ग Apamarga<br> is a species of the Amaranthaceae family. It is an important medicinal herb found as a weed throughout India and invasive in parts of Kenya, Tanzania and Uganda. Though almost all of its parts are used in traditional systems of medicines, seeds, roots and shoots are the most important parts which are used medicinally.
See also : [[Kshara]]