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  1. By: Spellman, D L - Dwyer, John D. - Davidse, Gerrit
    Type: Article
    In: Rhodora
    Volume: 77
    Date: 1975
    Page Range: 105--140
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  2. By: Spellman, D L
    Type: Article
    In: Phytologia
    Volume: 25
    Date: 1973
    Page Range: 438--438
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke
  3. By: Spellman, D L - Morillo, G
    Type: Article
    In: Phytologia
    Volume: 34
    Date: 1976
    Page Range: 152--152
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke
  4. By: Spellman, D L
    Type: Article
    In: SIDA, contributions to botany
    Volume: 7
    Date: 1977
    Page Range: 92--92
    Publication Info: [Dallas, W. F. Mahler, etc.], 1962-
  5. By: Morillo, G - Spellman, D L
    Type: Article
    In: Phytologia
    Volume: 33
    Date: 1976
    Page Range: 82--88
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke