no
Yes, the water hyacinth, Eichhornia crassipes, floats.
The water hyacinth float on the surface, and are not attached to the bottom.
they float
Some plants, like water hyacinth, float in water. They have special types of leaves that help them to stay afloat.
The water hyacinth has a large surface area that lays over the top of the water, which distributes its weight and increases its buoyancy sufficient to keep it floating.
could be water hyacinth Yes, water Hyacinth's do float on the water surface. Hyacinths have leaves that look like hippo ears. Water lilies also float on the water surface. They have flat leaves that fill the water surface and the flowers poke up among the leaves. Patti Rose www.rosepond.com
There are many like: water hyacinth, frog bit, fairy moss etc.
Leaf petiole
depletes oxygen
The leaves of water hyacinth are long and leathery and have wax coating surrounding them. They are made up of long spongy parenchyma tissues that have several air pockets. The air pockets help the leaves to stand erect and float on the surface of water. Arsha 9th
It contains air spaces (aerenchyma) within the cells of the petiole