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  1. By: Barrett, J. T. (James Theophilus),
    Publication info: 1903
    Holding Institution: University Library, University of Illinois Urbana Champaign
  1. By: Barrett, J. T. (James Theophilus),
    Type: Article
    In: Annals of botany
    Volume: 26
    Date: 1912-01
    Page Range: 209--238
    Publication Info: London, Academic Press [etc.],
  2. By: Bartholomew, E. T. (Elbert Thomas), - Barrett, J. T. (James Theophilus), - Fawcett, H. S. (Howard Samuel),
    Type: Article
    In: American journal of botany
    Volume: 10
    Issue: 2
    Date: 1923-02
    Page Range: 67--70
    Publication Info: Lancaster, Pa, Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens, 1914-