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  1. By: Barkley, Fred A. (Fred Alexander),
    Holding Institution: Harvard University Botany Libraries
    BHL Collections: BHL Field Notes Project
  2. By: Barkley, Fred A. (Fred Alexander),
    Holding Institution: Harvard University Botany Libraries
    BHL Collections: BHL Field Notes Project
  1. By: Barkley, Fred A. (Fred Alexander), - Wurdack, J. J. - Cuatrecasas, J
    Type: List
    In: Plant lists and correspondence
    Date: 1949-1971
  2. By: Barkley, Fred A. (Fred Alexander), - Gutiérrez Villegas, Gabriel - Correa Velasquez, Jairo - Rueda Reyes, Jaime - Clement, Ian D - Moore, Harold Emery Jr. - Smith, L. B.
    Type: List
    In: Plant lists and correspondence
    Date: 1949-1971
  3. By: Barkley, Fred A. (Fred Alexander), - Proctor, George R
    Type: List
    In: Plant lists and correspondence
    Date: 1949-1971
  4. By: Barkley, Fred A. (Fred Alexander), - Willard, Louis E. - Montoya, Francisco - Drouet, Francis, - Moldenke, Harold N. (Harold Norman), - Schweinfurth, Charles, - Wurdack, J. J.
    Type: List
    In: Plant lists and correspondence
    Date: 1966-1971
  5. By: Barkley, Fred A. (Fred Alexander), - Gutiérrez Villegas, Gabriel - Epling, Carl, - Killip, Ellsworth P. (Ellsworth Paine), - McVaugh, Rogers, - Moldenke, Harold N. (Harold Norman), - Smith, L. B. - Standley, P C - Swallen, Jason R.
    Type: List
    In: Plant lists and correspondence
    Date: 1949
  6. By: Barkley, Fred A. (Fred Alexander), - Webster, Grady L. (Grady Linder),‏ ‎
    Type: List
    In: Plant lists and correspondence
    Date: 1969
  7. By: Barkley, Fred A. (Fred Alexander), - Webster, Grady L. (Grady Linder),‏ ‎
    Type: List
    In: Plant lists and correspondence
    Date: 1949-1971
  8. By: Barkley, Fred A. (Fred Alexander), - Constance, Lincoln, - Johnston, I. M.
    Type: List
    In: Plant lists and correspondence
    Date: 1949-1971
  9. By: Barkley, Fred A. (Fred Alexander), - Shetler, Stanwyn G
    Type: List
    In: Plant lists and correspondence
    Date: 1949-1971
  10. By: Barkley, Fred A. (Fred Alexander),
    Type: List
    In: Plant lists
    Date: 1966
  11. By: Barkley, Fred A. (Fred Alexander), - Velez, Luna Armando - Hernández M., Mauro - Ramírez Borjos, Pedro Antonio
    Type: List
    In: Plant lists
    Date: 1970
  12. By: Barkley, Fred A. (Fred Alexander), - Hernández M., Mauro - Cuellar, José Leonidis - Hernández R., Julio
    Type: List
    In: Plant lists
    Date: 1970
  13. By: Barkley, Fred A. (Fred Alexander),
    Type: List
    In: Plant lists
    Date: 1966
  14. By: Barkley, Fred A. (Fred Alexander), - Reinhard, John F.
    Type: List
    In: Plant lists
    Date: 1970
  15. By: Barkley, Fred A. (Fred Alexander), - Hernández, Mauro - Hernández, J. - Morton, C. V. (Conrad Vernon)
    Type: List
    In: Plant lists and correspondence
    Date: 1949-1971