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  1. By: Höhnel, Franz, Ritter von,
    Publication info: Wien, [date of production not identified]
    Holding Institution: Harvard University Botany Libraries
    Subjects: 1852-1920  Farlow Reference Library and Herbarium  Fungi  Herbarium  Höhnel, Franz,  Indexes  Ritter von,  
    BHL Collections: BHL Field Notes Project
  2. By: Heigel, Karl Theodor von,
    Publication info: München, Verlag der K.B. Akademie, 1904
    Holding Institution: Smithsonian Libraries and Archives
    Subjects: 1839-1904  Ritter von,  Zittel, Karl Alfred,