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The Swamp morning glory (Ipomoea aquatica) belongs to Convolvulaceae (the Bindweed family). It is a perennial herb that is native to Southeast Asia. It was introduced into Japan via Okinawa in ancient days. This herb is vine and grows in bogs or water's edges. The stems are long, mid-air and crawl on the grounds. The leaves are lanceolate, long-ovate or oblong, and arranged in alternate. The flowering clusters are borne on the axils, and the pale purple to white, about 5 cm across, funnel-shaped flowers bloom in late fall. The leaves are usually stir fried, boiled green or marinated food. In Taiwanese Chinese, it is called "甕菜" and in Chinese "蕹菜" (weng cai).
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