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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Howard, Gabrielle L. C.
    Type: Article
    In: Annals of botany
    Volume: 16
    Date: 1902-12
    Page Range: 591--592
    Publication Info: London, Academic Press [etc.],
  2. By: Blackman, Frederick Frost, - Howard, Gabrielle L. C.
    Type: Article
    In: Annals of botany
    Volume: 15
    Date: 1901-09
    Page Range: 533--546
    Publication Info: London, Academic Press [etc.],