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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Johnson, Miles F
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 58
    Date: 1971
    Page Range: 6--88
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-
  2. By: Johnson, Miles F
    Type: Article
    In: Rhodora
    Volume: 74
    Date: 1972
    Page Range: 403--405
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],