A new flavonol glycoside, named boehmerin, was isolated from the roots of Boehmeria tricuspis MAKINO (Urticaceae) together with quercetin, taxifolin and avicularin. The structure of boehmerin was determined as quercetin 3-(3"-O-acetyl)-α-L-arabinofuranoside on the basis of its spectrometrical and chemical data.
