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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Perry, James D
    Type: Article
    In: Rhodora
    Volume: 73
    Date: 1971
    Page Range: 309--369
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  2. By: Wilbur, Robert L. - Perry, James D
    Type: Article
    In: Rhodora
    Volume: 69
    Date: 1967
    Page Range: 184--194
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  3. By: Ornduff, Robert - Perry, James D
    Type: Article
    In: Rhodora
    Volume: 66
    Date: 1964
    Page Range: 100--109
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],