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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hensold., N - Parfitt, B D
    Type: Article
    In: Phytologia
    Volume: 58
    Date: 1985
    Page Range: 169--171
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke
  2. By: Parfitt, B D
    Type: Article
    In: Rhodora
    Volume: 99
    Date: 1997
    Page Range: 223--228
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],