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  • Monocotyledonae
  • Seymour, F. C.
  • Massachusetts
  • North America
  • United States
  • Massachusetts
  • North America
  • United States
  • 1910s
  • NMNH - Botany Dept.
  • Monocotyledonae
  • Monocotyledonae
  • Alismatales
  • Alismatales
  • Hydrocharitaceae
  • Hydrocharitaceae
  • Najas flexilis (Willd.) Rostk. & Schmidt
  • Najas flexilis (Willd.) Rostk. & Schmidt