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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Bowman, Robert N
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 34
    Date: 1987
    Page Range: 41--47
    Publication Info: Berkeley, California Botanical Society,
  2. By: Bowman, Robert N - Hoch, Peter C
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 66
    Date: 1979
    Page Range: 897--898
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-