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出典:Wikipedia
出典:『Wikipedia』 (2011/05/23 09:20 UTC 版)
Pistia is a genus of aquatic plant in the family Araceae, comprising a single species, Pistia stratiotes, often called water cabbage or water lettuce or Nile cabbage. Its native distribution is uncertain, but probably pantropical; it was first described from the Nile near Lake Victoria in Africa. It is now present, either naturally or through human introduction, in nearly all tropical and subtropical fresh waterways.