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  • Pteridophyte
  • Calder, J. A.
  • Gillett, J. M.
  • Calder, J. A.
  • Gillett, J. M.
  • Canada
  • North America
  • Yukon Territory
  • Canada
  • North America
  • Yukon Territory
  • 1960s
  • NMNH - Botany Dept.
  • Pteridophyte
  • Pteridophyte
  • Equisetales
  • Equisetales
  • Equisetaceae
  • Equisetaceae
  • Equisetum fluviatile L.
  • Equisetum fluviatile L.