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  1. By: Darker, Grant Dooks.
    Publication info: Jamaica Plain, Mass, The Arnold Arboretum of Harvard University, 1932
    Holding Institution: Harvard University Botany Libraries
  1. By: Darker, Grant Dooks.
    Type: Article
    In: Journal of the Arnold Arboretum
    Volume: 16
    Issue: 3
    Date: 1935
    Page Range: 364-365
    Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-