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  1. By: Jahns, Hans Martin, - Mackenzie, Elke - Weber, William A. (William Alfred), - Huneck, Siegfried,
    Type: Article
    In: Occasional papers of the Farlow Herbarium of Cryptogamic Botany
    Volume: 4
    Date: 1972
    Page Range: 1--12
    Publication Info: Cambridge, Mass, Harvard University, Farlow Herbarium of Cryptogamic Botany,