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  1. By: Douin, M
    Type: Article
    In: Bulletin de la Société botanique de France
    Volume: 52
    Date: 1905
    Page Range: 244--264
    Publication Info: Paris, La Société, 1854-1978
  2. By: Douin, M
    Type: Article
    In: Bulletin de la Société botanique de France
    Volume: 59
    Date: 1912
    Page Range: 731--736
    Publication Info: Paris, La Société, 1854-1978