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来自维基百科,自由的百科全书
三色牵牛(學名:Ipomoea tricolor),又名天蓝牵牛,为旋花科番薯属一年生植物,是常見的觀賞植物。可長達3公尺,原產熱帶美洲。靠纏繞莖攀緣。葉廣橢圓形至心形。花直徑可達12.5公分,漏斗狀,藍色,有時為紫色或紅色,頸部黃色。與甘薯和旋花近緣。
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