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Convolvulaceae

Convolvulus, from the Latin convolvere to twine. Usually herbs or vines, climb by twining (twine anticlockwise) tendrils absent. Latex maybe present. Leaves alternate, maybe simple or compound, sometimes deeply lobed, leaf base often cordate. Flowers subtended by 2 bracteoles, usually 5-merous with distinct calyx and corolla, petals  fused, the central portion of each petal is characteristically thickened. Fruit a capsule, calyx usually persistent.