A diarylheptanoid glycoside named myricanol glucoside (3), C₂₇H₃₆O₁₀·1/2 H₂O, mp 220-223°C, [α]_D-53.7°, was isolated from the stem bark of Myrica rubra in addition to myricanol (1) and myricanone (2). On the basis of chemical and spectral evidence the glucoside (3) was elucidated to be myricanol 5-β-D-glucopyranoside. This is the first example as a glucoside of biphenyl-type diarylheptanoid.