is a family
of flowering plants
. In past decades, several systems of plant taxonomy
recognized this family, notably the 1981 Cronquist system
. In this circumscription, the family includes the several genera of mistletoes
However, the APG II system, of 2003 (unchanged from the APG system, does not recognize the family, treating it as a synonym of Santalaceae.
Genera once treated as belonging to family Viscaceae include: