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  1. By: Chamberlain, Charles Joseph,
    Publication info: Chicago, University of Chicago Press, 1919
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    Subjects: Cycadales  
  2. By: Miquel, Friedrich Anton Wilhelm
    Publication info: Ultrajecti, C. van der Post Jr, 1861
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    Subjects: Cycadaceae  Cycadales  
  1. By: Martínez-Domínguez, Lilí - Nicolalde-Morejón, Fernando - Vergara-Silva, Francisco - Stevenson, Dennis
    Type: Article
    In: PhytoKeys
    Volume: 100
    Date: 2018
    Page Range: 91-124
    Publication Info: Pensoft Publishers 2018
    Subjects: Cycadales  Mexican cycads  Neotropical gymnosperms  taxonomic circumscription