Genera : 60 - 70
Species: 700 - 940
Distribution: Mostly in the subtropical and tropical regions and well represented in the Southern Hemisphere.
Economic Uses: No known economic value.
Defining Features of Interest: The family is parasitic, yet green (usually evergreen) and is attached to the branches or roots of the host plant. A large bulge of tissue commonly forms where the plant enters the host.
Fossil Evidence:No known fossil record.