The Clusiaceae are trees or shrubs, usually with milky or colored sap, comprising about 50 genera and 1200 species. The leaves are simple and are opposite, whorled, or rarely alternate. Stipules are absent. The flowers are actinomorphic and are usually functionally unisexual. The perianth consists of a calyx of 2-10 imbricated, often decussate sepals and 4-12 petals. The stamens are generally numerous and are distinct or variously united. The gynoecium consists of a single compound pistil of 3-5 or more carpels, an equal number of stigmas, and a superior ovary of 3-5 or more locules, each containing 1-many axile ovules. The fruit is usually a capsule or berry.
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