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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Correll, Helen B. - Correll, Donovan Stewart, - Hires, Clara S
    Type: Article
    In: American fern journal
    Volume: 56
    Date: 1966
    Page Range: 82--83
    Publication Info: [Washington, etc.] American Fern Society
  2. By: Hires, Clara S
    Type: Article
    In: Journal of the New York Botanical Garden
    Volume: 41
    Issue: 491
    Date: 1940-11
    Page Range: 257--266
    Publication Info: Lancaster, Pa, Published for the Garden by the New Era Printing Co, 1900-