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  1. By: Ownbey, Marion, - Aase, Hannah C
    Type: Article
    In: Rhodora
    Volume: 61
    Date: 1959
    Page Range: 70--72
    Publication info: [Cambridge, Mass., etc.]New England Botanical Club [etc.]
  2. By: Aase, Hannah C
    Type: Article
    In: Botanical gazette.
    Volume: 60
    Issue: 4
    Date: 1915
    Page Range: 277--313
    Publication info: Chicago [etc.]University of Chicago Press [etc.]