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Acanthaceae, one of 24 families in the mint order (Lamiales) of flowering plants, containing approximately 220 genera and nearly 4,000 species distributed predominantly in tropical and subtropical regions of the world. The greater part of the Acanthaceae family are herbs or shrubs, but vines and trees occur as well. The range of habitats extends from marshes and estuaries to extremely dry situations, but most of these plants are found in damp tropical forests. A diverse...