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  1. By: Cannon, Margaret J. (Margaret Joy), - Cannon, John F. M. (John Francis Michael),
    Type: Article
    In: Bulletin of the British Museum (Natural History) Botany
    Volume: 19
    Date: 1989-11-30
    Page Range: 5--61
    Publication Info: London, The Museum, 1951-1992
  2. By: Cannon, Margaret J. (Margaret Joy), - Cannon, John F. M. (John Francis Michael),
    Type: Article
    In: Bulletin of the British Museum (Natural History) Botany
    Volume: 12
    Date: 1984-04-26
    Page Range: 1--35
    Publication Info: London, The Museum, 1951-1992
  3. By: Cannon, Margaret J. (Margaret Joy), - Cannon, John F. M. (John Francis Michael),
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 73
    Date: 1986
    Page Range: 481--485
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-