Water Chestnut: - It is a grass-like sedge native to Asia, tropical Africa, and Oceania.
- It is not a nut but rather an aquatic vegetable that grows in marshes, under water, or in mud.
- It has stem-like, tubular green leaves that grow to about 1.5 m.
- The water caltrop, which also is referred to by the same name, is unrelated and often confused with the water chestnut.
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