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  1. Floristic Surprises in North America North of Mexico
    By: Ertter, Barbara
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 87
    Date: 2000
    Page Range: 81--109
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  2. New sections, combinations, and varieties in Rosaceae, Potentilleae
    By: Reveal, James Lauritz - Ertter, Barbara
    Type: Article
    In: Novon
    Volume: 17
    Date: 2007
    Page Range: 315--325
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  3. Rosa woodsii subsp. puberulenta and variety ertterae (Rosaceae), New in Western North America
    By: Lewis, Walter H - Ertter, Barbara
    Type: Article
    In: Novon: A Journal For Botanical Nomenclature
    Volume: 20
    Date: 2010
    Page Range: 47--52
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