A new (propylphenyl)bibenzyl, bambusifolol (1), along with six known compounds, batatasin III (2), tristin (3), 3-hydroxy-5-methoxy bibenzyl (4), gigantol (5), 3',5-dimethoxy-9,9'-diacetyl-4,7'-epoxy-3,8'-bilign-7-ene-4'-methol (6) and balanophonin (7) were isolated from the whole plants of Eria