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  1. By: Ward, Darrell E.,
    Type: Article
    In: Phytologia
    Volume: 56
    Date: 1984
    Page Range: 55--60
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke
  2. By: Ward, Darrell E.,
    Type: Article
    In: Phytologia
    Volume: 54
    Date: 1983
    Page Range: 302--309
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke
  3. By: Spellenberg, Richard - Ward, Darrell E.,
    Type: Article
    In: Phytologia
    Volume: 64
    Date: 1988
    Page Range: 390--398
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke
  4. By: Ward, Darrell E., - Spellenberg, Richard
    Type: Article
    In: Phytologia
    Volume: 61
    Issue: 2
    Date: 1986
    Page Range: 119--125
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke
  5. By: Spellenberg, Richard - Sutherland, D - Ward, Darrell E.,
    Type: Article
    In: Phytologia
    Volume: 75
    Date: 1993
    Page Range: 166--169
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke
  6. By: Bartel, Jim A. - Ward, Darrell E., - Spellenberg, Richard - Cochrane, Theodore S. - Armstrong, Wayne P. - Hamon, Dan
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 28
    Date: 1981
    Page Range: 184--188
    Publication Info: Berkeley, California Botanical Society,