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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Coleman, Douglas C. (Douglas Clifton), - Mathieson, Arthur C.
    Type: Article
    In: Rhodora
    Volume: 77
    Date: 1975
    Page Range: 76--104
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  2. By: Coleman, Douglas C. (Douglas Clifton), - Mathieson, Arthur C.
    Type: Article
    In: Rhodora
    Volume: 76
    Date: 1974
    Page Range: 537--563
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],