The ethanolic extract of the aerial parts of Centaurea scoparia Sieb. (Asteraceae) afforded five polyoxygenated flavones apigenin, luteolin, salvigenin, cirsimaritin, and hispidulin, the two lignans (-)-matairesinol and (-)-arctigenin together with omega-hydroxypropioguaiacone and vanillin. The structure elucidations of the isolated compounds are based on spectroscopic methods including 1D- and 2D-NMR spectra. Some proton and carbon signals are revised or newly reported.