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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Odion, Dennis C - Richards, Daniel V - Kelley, Walter A
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 32
    Date: 1985
    Page Range: 57--58
    Publication Info: Berkeley, California Botanical Society,
  2. By: Lea, Robert N. - Richards, Daniel V
    Type: Article
    In: Bulletin
    Volume: 104
    Issue: 3
    Date: 2005
    Page Range: 152--153
    Publication Info: Los Angeles, Calif, The Academy, 1971-