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  1. Aegiphila brenesii , a New Name for the Long-lost (Right Before Our Eyes) Clerodendrum costaricense (Lamiaceae)
    By: Hammel, Barry E - Grayum, Michael Howard,
    Type: Article
    In: Novon a journal of botanical nomenclature from the Missouri Botanical Garden.
    Volume: 21
    Issue: 1
    Date: 2011
    Page Range: 44--46
    Publication info: St. Louis, MO :Missouri Botanical Garden,
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  2. Dianthoveus: A New Genus of Cyclanthaceae
    By: Hammel, Barry E - Wilder, George J
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 76
    Date: 1989
    Page Range: 112--123
    Publication info: St. Louis :Missouri Botanical Garden Press,1914-
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  3. Forestiera isabelae (Oleaceae), una Especie Nueva para Costa Rica
    By: Hammel, Barry E - Cornejo, Xavier
    Type: Article
    In: Novon a journal of botanical nomenclature from the Missouri Botanical Garden.
    Volume: 19
    Date: 2009
    Page Range: 52--55
    Publication info: St. Louis, MO :Missouri Botanical Garden,
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  4. A New Species of Cyclanthera (Cucurbitaceae) from Alajuela Province, Costa Rica
    By: Hammel, Barry E
    Type: Article
    In: Novon a journal of botanical nomenclature from the Missouri Botanical Garden.
    Volume: 19
    Date: 2009
    Page Range: 49--51
    Publication info: St. Louis, MO :Missouri Botanical Garden,
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  5. New Taxa From the Uplands of Western Panama
    By: Hammel, Barry E - D'arcy, W G
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 68
    Date: 1981
    Page Range: 213--217
    Publication info: St. Louis :Missouri Botanical Garden Press,1914-
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  6. The Origami of Botany: A Guide to Collecting and Mounting Specimens of Cyclanthaceae
    By: Hammel, Barry E
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 74
    Date: 1987
    Page Range: 897--902
    Publication info: St. Louis :Missouri Botanical Garden Press,1914-
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  7. Preliminary Report on the Flora Project of La Selva Field Station, Costa Rica
    By: Hammel, Barry E - Grayum, Michael Howard,
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 69
    Date: 1982
    Page Range: 420--425
    Publication info: St. Louis :Missouri Botanical Garden Press,1914-
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