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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Stewart, Joan G
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 23
    Date: 1976
    Page Range: 438--448
    Publication Info: Berkeley, California Botanical Society,
  2. By: Stewart, Joan G
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 30
    Date: 1983
    Page Range: 255--256
    Publication Info: Berkeley, California Botanical Society,