Abstract
A new catechin dimer (II), (-)-epiafzelechin-(-)-epicatechin-4, 8 (or 6)-dimer, was isolated from the roots of Boehmeria tricuspis MAKINO (Urticaceae) together with (-)-epicatechin (I) and (-)-epicatechin-(-)-epicatechin-4, 8-(or 6)-dimer (III).