Thalictrum cultratrum (Ranunculaceae), of Pakistani origin, has yielded the new aporphine-benzylisoquinolines (+)-thalibulamine (1), (+)-thalifaronine (3), (+)-thalifaramine (4), (+)-thalifaretine (5), (+)-thalifaricine (6), (+)-thalifarazine (7), and (+)-thalifaroline (9). Some trends concerning the structural features and stereochemistry of Thalictrum aporphine-benzylisoquinoline dimers have been noted. © 1986, American Chemical Society. All rights reserved.