water milfoil

water milfoil

noun
any of various aquatic plants, chiefly of the genus Myriophyllum, the submerged leaves of which are very finely divided.

Origin:
1570–80

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Collins
World English Dictionary
water milfoil
 
n
any of various pond plants of the genus Myriophyllum, having feathery underwater leaves and small inconspicuous flowers: family Haloragidaceae

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Britannica
Encyclopedia

water milfoil

any member of the genus Myriophyllum (family Haloragaceae), about 45 widely distributed species of submerged freshwater plants with whorls of feathery leaves and emergent, wind-pollinated flowers. Some species are cultivated in pools and aquariums, especially the parrot's feather, or water feather, (M. aquaticum) and the myriad leaf (M. verticillatum).

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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