• First description of extrafloral nectaries in Opuntia robusta (Cactaceae): Anatomy and ultrastructure 

      Sandoval Molina, Mario Alberto; Zavaleta Mancera, Hilda Araceli; León Solano, Héctor Javier; Solache Ramos, Lupita Tzenyatze; Jenner, Bartosz; Morales Rodríguez, Simón; Patrón Soberano, Olga Araceli; Janczur, Mariusz Krzysztof (2018)
      "To our knowledge, there are no studies about the structure and ecological function of extrafloral nectaries (EFNs) in Opuntia robusta. This is the first description of EFNs in O. robusta, where young spines have an ...