American plant with roundish heart-shaped or kidney-shaped leaves; usually rooted in muddy bottoms of ponds and ditches.

 
  • 一種美國水生植物,葉腎形或圓心形,佛焰苞具有短的柄或無(wú)柄;通常扎根在池塘和水溝的底部淤泥中。
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