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Eichhornia
  ''Eichhornia'', water hyacinth, is a genus of aquatic flowering plants in the family Pontederiaceae. The genus is native to South America. ''E. crassipes'' has become widely naturalized in tropical and subtropical regions and is a significant invasive species. ==Description== ''Eichhornia'' species are perennial aquatic plants (or hydrophytes) native to tropical and sub-tropical South America, excepting E. natans from Africa. An erect stalk supports a single spike of up to 30 conspicuously attractive flowers, mostly lavender to pink in colour with six petals. When not in bloom, water hyacinth may be mistaken for frog's-bit (''Limnobium spongia''). The common water hyacinth (''Eichhornia crassipes'') are vigorous growers known to double their population in two weeks.
  抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Eichhornia」の詳細全文を読む
 
 
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