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The Betel (Piper betle) belongs to Piperaceae (the Pepper family). It is an evergreen woody vine that is distributed from the Indo-china Peninsula to Malaysia. It grows on the forest floor of tropical rainforests, is a vine, and reaches a height of about 1 m. It is also widely cultivated throughout Southeast Asia and South Asia. The leaves are heart-shaped, glossy, and entire. The stipes, like the stems, have a reddish tinge. It produces katkins from the nodes, bearing flowers without sepals or petals. The leaves have a pungent taste and contain aromatic oils, used to wrap and chew the fruit of the betel nut palm. The vine is also used medicinally. The Japanese name "kinma" is a corruption of the Thai words "kin" (to eat) and "màak" (betel nut).
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