A.  Piñeyro-Nelson, Flores-Sandoval, E., Garay-Arroyo, A., García-Ponce, B., and Álvarez-Buylla, E. R., ?Development and evolution of the unique floral organ arrangement of Lacandonia schismatica?, International Journal of Plant Developmental Biology, vol. 4(1). pp. 86 - 97, 2010.