Many of Polygonaceae are noxious weeds , some ornamentals , and buckwheat ( Fagopyrum ) and rhubarb ( Rheum ) foodstuffs .
少数可食, 如 荞麦 和大黄;有一些是 观赏植物.
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Numerous plant species, often crop plants or ornamentals, have been transported throughout the world by humans.
许多植物物种, 一般是农用作物或观赏植物,被人们传输到世界各地.
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