Genera : 62 - 75
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Distribution: In the Southern Hemisphere, especially in Australia and South Africa.
Economic Uses: Mainly cultivated as ornmentals and for dried flowers, the family is also the source of the important Hawaiian cash crop - the macadamia nut.
Defining Features of Interest: The family is a common feature of Australia's coastal heathlands because it grows well in nutrient-poor soils.
Fossil Evidence: Fossil pollen in the Upper Cretaceous and fossil leaves in thePaleocene.