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  1. By: Atwood, John T - De Retana, Dora Emilia Mora
    Type: Article
    In: Flora Costaricensis /
    Volume: 40
    Date: 1999-04-30
    Page Range: 1--182
    Publication info: Chicago, Ill. :Field Museum of Natural History,1999.
  2. By: Atwood, John T
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 71
    Date: 1984
    Page Range: 191--209
    Publication info: St. Louis :Missouri Botanical Garden Press,1914-