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  1. By: Strausbaugh, P D
    Type: Article
    In: Botanical gazette
    Volume: 71
    Issue: 5
    Date: 1921
    Page Range: 337--357
    Publication Info: Hanover, Ind, [publisher not identified], 1876-1991
  2. By: Strausbaugh, P D
    Type: Article
    In: Rhodora
    Volume: 34
    Date: 1932
    Page Range: 142--146
    Publication Info: [Cambridge, Mass., etc.] New England Botanical Club [etc.]