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Opiliaceae A family of evergreen trees and shrubs, plus a few climbers, very similar to Olacaceae and often included in that family, most members of which are root parasites. They have alternate, simple, entire leaves, without stipules. The flowers are regular, usually bisexual but sometimes dioecious, and held in simple or compound spikes or racemes. If present, the calyx is of 4 sepals and the corolla of 4 or 5 free petals. The fruit is a drupe, and the seed contains an oily endosperm. There are 9 genera and 28 species, found throughout the tropics, but centred in Asia.