One of the mysteries of the English language finally explained.
A tropical aquatic plant of the arum family which forms a floating rosette of leaves.
- ‘Three illegal species that top the list are the highly invasive water hyacinth, water lettuce and giant salvinia.’
- ‘The move is aimed at trying to slow spread of harmful aquatic vegetation such as hydrilla, hyacinth, water lettuce and salvinia, alien plants that can denigrate freshwater fisheries.’
- ‘I like the gray-green leaves of water lettuce, another boatlike floater, and the tiny fronds of Azolla filiculoides, a fern that happens to float.’
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