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BINDWEED
Bindweeds include about 250 species of twining vines of the genera Convolvulus and Calystegia of the morning glory family, Convolvulaceae. They are often grown on trellises or fences to display their heart- or arrow-shaped leaves and funnel-shaped white, pink, or blue flowers. Some species are troublesome weeds, especially the hedge bindweed, Calystegia sepium. The hedge bindweed has been used medicinally for its purgative action.
