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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Porter, Duncan M - Parfitt, Bruce D - Brown, Gregory K - Lehto, Elinor
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 26
    Date: 1979
    Page Range: 140--144
    Publication Info: Berkeley, California Botanical Society,