obsolete sequoyitol galactinol:D-galactosylononitol galactosyltransferase activity (obsolete GO:0102833)
OBSOLETE. Catalysis of the reaction: 1D-5-O-methyl-myo-inositol + alpha-D-galactosyl-(1->3)-1D-myo-inositol = D-galactosylononitol + myo-inositol.