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  1. By: Motzkin, Glenn
    Type: Article
    In: Rhodora
    Volume: 96
    Date: 1994
    Page Range: 44--68
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  2. By: Motzkin, Glenn
    Type: Article
    In: Arnoldia
    Volume: 58
    Issue: 2
    Date: 1998
    Page Range: 33--34
    Publication Info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
  3. By: Motzkin, Glenn - Patterson, W A
    Type: Article
    In: Rhodora
    Volume: 93
    Date: 1991
    Page Range: 307--321
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],