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  • Pteridophyte
  • Conant, D. S.
  • West Indies Project
  • Conant, D. S.
  • West Indies Project
  • Mayagüez
  • Puerto Rico
  • West Indies - Neotropics
  • Mayagüez
  • Puerto Rico
  • West Indies - Neotropics
  • 1970s
  • NMNH - Botany Dept.
  • Pteridophyte
  • Pteridophyte
  • Cyatheales
  • Cyatheales
  • Cyatheaceae
  • Cyatheaceae
  • Alsophila brooksii (Maxon) R.M. Tryon x A. portoricensis (Spreng. ex Kuhn) D.S. Conant
  • Cyathea x brooskii-portoricensis
  • Alsophila brooksii (Maxon) R.M. Tryon x A. portoricensis (Spreng. ex Kuhn) D.S. Conant
  • Cyathea x brooskii-portoricensis