Definitions for viscaceae
Viscaceae, family Viscaceae, mistletoe family(noun)
in some classifications considered a subfamily of Loranthaceae
U.S. National Library of Medicine
The Christmas Mistletoe plant family of the order Santalales, subclass Rosidae, class Magnoliopsida. They are parasitic primarily on coniferous trees forming a drooping evergreen bush of leathery leaves on tree branches. The berries are sticky and toxic.