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  1. By: Payson, Edwin
    Type: Article
    In: Botanical gazette
    Volume: 60
    Issue: 5
    Date: 1915
    Page Range: 374--382
    Publication Info: Hanover, Ind, [publisher not identified], 1876-1991
  2. By: Payson, Edwin
    Type: Article
    In: Botanical gazette
    Volume: 61
    Issue: 1
    Date: 1916
    Page Range: 72--74
    Publication Info: Hanover, Ind, [publisher not identified], 1876-1991