微小无根水生植物的一个属，有球形叶，漂浮于水面或生长于水面附近的地方。
Minute rootless aquatic herbs having globular fronds floating on or near the water surface and bearing one flower per frond .
一种美国水生植物，叶肾形或圆心形，佛焰苞具有短的柄或无柄；通常扎根在池塘和水沟的底部淤泥中。
American plant with roundish heart-shaped or kidney-shaped leaves; usually rooted in muddy bottoms of ponds and ditches.
浮叶，叶枕：水生植物漂浮的宽叶子，如睡莲。
The broad, floating leaf of an aquatic plant such as the water lily.
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