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  1. By: Endress, Mary E. - Van Der Ham, Raymond W J M - Nilsson, Siwert - Civeyrel, Laure - Chase, Mark W., - Sennblad, Bengt - Potgieter, Kurt - Joseph, Jeffrey - Powell, Martyn - Lorence, David - Zimmerman, Ylva-Maria - Albert, Victor A
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 94
    Issue: 1
    Date: 2007
    Page Range: 1--35
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-
  2. By: Lorence, David
    Type: Article
    In: Acta Botánica Mexicana
    Volume: 88
    Date: 2009
    Page Range: 73--79
    Publication Info: México, Instituto de Ecología, A C, 1988-
  3. By: Ebihara, Atsushi - Nitta, Joel H - Lorence, David - Dubuisson, Jean-Yves
    Type: Article
    In: American fern journal
    Volume: 99
    Date: 2009
    Page Range: 200--206
    Publication Info: [Washington, etc.] American Fern Society