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  1. By: Allred, Kelly W. (Kelly Wayne) - Columbus, J. Travis
    Type: Article
    In: Phytologia
    Volume: 67
    Date: 1989
    Page Range: 361--365
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke
  2. By: Roberts, Fred M. - Columbus, J. Travis
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 55
    Date: 2008
    Page Range: 90--91
    Publication Info: Berkeley, California Botanical Society,
  3. By: Peterson, Paul M. - Columbus, J. Travis
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 55
    Date: 2008
    Page Range: 159--160
    Publication Info: Berkeley, California Botanical Society,
  4. By: Peterson, Paul M. - Columbus, J. Travis
    Type: Article
    In: Journal of the Botanical Research Institute of Texas
    Volume: 3
    Date: 2009
    Page Range: 527--534
    Publication Info: Fort Worth, Tex, Botanical Research Institute of Texas, 2007-
  5. By: Ocampo Acosta, Gilberto - Columbus, J. Travis
    Type: Article
    In: Acta Botánica Mexicana
    Volume: 83
    Date: 2008
    Page Range: 25--32
    Publication Info: México, Instituto de Ecología, A C, 1988-
  6. By: Ocampo Acosta, Gilberto - Columbus, J. Travis
    Type: Article
    In: Acta botánica mexicana
    Date: 2008-04-01
  7. By: Riefner, Richard E - Columbus, J. Travis
    Type: Article
    In: Journal of the Botanical Research Institute of Texas
    Volume: 2
    Date: 2008
    Page Range: 743--759
    Publication Info: Fort Worth, Tex, Botanical Research Institute of Texas, 2007-