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Beach Knotweed (Polygonum paronychia)

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Polygonum Paronychia, or more commonly know as Beach Knotweed, is a subshrub of the genus Polygonum. Its duration is perennial which means it will grow year after year. Polygonum Paronychia or Beach Knotweed's floral region is North America US Lower 48, specifically in the states of California, Nevada, Oregon and Washington.

  • Category: Dicot
  • Genus: Polygonum
  • Family: Polygonaceae
  • Order: Polygonales
  • Class: Magnoliopsida
  • Division: Magnoliophyta
  • Duration: Perennial
  • Growth Habit: Subshrub
  • Native Status: L48 (N) CAN (N)





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