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  1. By: Knowles, Etta L
    Type: Article
    In: Botanical gazette.
    Volume: 12
    Issue: 9
    Date: 1887
    Page Range: 216--218
    Publication info: Chicago [etc.]University of Chicago Press [etc.]
  2. By: Knowles, Etta L
    Type: Article
    In: Botanical gazette.
    Volume: 11
    Issue: 8
    Date: 1886
    Page Range: 206--208
    Publication info: Chicago [etc.]University of Chicago Press [etc.]