Xyridaceae

      Rudall, P.J. and M.G. Sajo. 1999. Systematic position of Xyris: flower and seed anatomy. International Journal of Plant Sciences 160: 795-808.
      Sajo, M.G. and P.J. Rudall. 1999. Development of ensiform leaves and other vegetative structures in Xyris. Botanical Journal of the Linnean Society 130: 171-182.