Partheniumhysterophorus L. from the family of Asteraceae, popularly known as Congress weed, Carrot weed, Star weed, Fever few, White top, ChatakChandani, Bitter weed. The ability of its seeds to germinate in any season of the year, makes it a constantly flourishing component of the vegetation. The given four extract aqueous, acetone, ethanol and methanol extracts of leaves of the fresh Partheniumhysterophorus L were screened for the presence of different phytochemical by standard procedure an extract from the Partheniumhysterophorus L. leaves were screened for their phytochemical constituents. The present study indicates that the fresh plant contains different classes of secondary metabolites such as alkaloids, steroids, flavonoids, terpenoids, saponins, cardiac glycosides, tannins etc. Phytochemicals are certain non-nutritive plant chemicals which have allelopathic properties effect. Therefore, it is of interest to investigate the phytochemical constituents of the Indian plant PartheniumhysterophorusL.
