Seven flavonoids are reported from an aqueous methanol extract of the flowers of Mybum mananum: apigenin 7-0-/?-(2"-O-a-rhamnosyl)galacturonide, kaempferol 3-0-a-rhamnoside-7-0-fi-galacturonide, apigemn 7-0 p-glucuronide 6"-ethyl ester, aplgemn 7-0-/?-glucoside, apigenin 7-0-/I-galactoade, kaempferol-3-0-a-rhamnoslde and kaempferol. The structures were established by routine methods as well as by FABMS and "C NMR spectral measurements.