红苕也叫红薯，是旋花科的植物，牵牛花也是旋花科的，它们俩的花很像。
在川渝地区通常把红苕花与乡下很土但穿衣又很花哨俗气的女人联系起来，因为四川话中“苕”字的大致意思就是俗气、土里土气。
曾经的巴渝笑星“中江表妹”表演的谐剧里就经常提及“红苕花”一词
红苕花的图片
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