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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Diersing, V E
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 89
    Date: 1976
    Page Range: 451--466
    Publication Info: Washington, Biological Society of Washington,
  2. By: Shaw, R B - Anderson, S L - Schultz, K A - Diersing, V E
    Type: Article
    In: Phytologia
    Volume: 67
    Date: 1989
    Page Range: 1--42
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke