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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Felix Rosen
    Type: Article
    In: Beiträge zur Biologie der Pflanzen
    Volume: 4
    Issue: 3
    Date: 1887
    Page Range: 253--267
    Publication Info: Berlin [etc.] Duncker & Humblot [etc.] 1870-2006