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  1. By: Schertz, Frank Milton,
    Type: Article
    In: Botanical gazette
    Volume: 71
    Issue: 2
    Date: 1921
    Page Range: 81--130
    Publication Info: Hanover, Ind, [publisher not identified], 1876-1991
  2. By: Schertz, Frank Milton,
    Type: Article
    In: Botanical gazette
    Volume: 68
    Issue: 6
    Date: 1919
    Page Range: 441--450
    Publication Info: Hanover, Ind, [publisher not identified], 1876-1991