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  1. By: Kern, Ellen Marie
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 32
    Date: 1945
    Page Range: 283--286
    Publication info: St. Louis :Missouri Botanical Garden Press,1914-
  2. By: Kern, Ellen Marie - Alper, Charlotte
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 32
    Date: 1945
    Page Range: 279--281
    Publication info: St. Louis :Missouri Botanical Garden Press,1914-