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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Williamson, R. V.
    Type: Article
    In: Journal of the New York Botanical Garden
    Volume: 47
    Issue: 561
    Date: 1946-09
    Page Range: 225--232
    Publication Info: Lancaster, Pa, Published for the Garden by the New Era Printing Co, 1900-