Williams, Norris H., Florida Museum of Natural History, University of Florida, Gainesville, Florida 32611, United States

• Lankesteriana: International Journal on Orchidology 2015: Lankesteriana: Volumen 15, Número 2 - Artículos
  Nectary structure and nectar in Sobralia and Elleanthus (Sobralieae: Orchidaceae)
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