Aaron H. Kennedy and Gary L. Walker, Miami University Ohio and Appalachian State University, respectively, are the recipients of the 18th annual Richard and Minnie Windler Award. The Windler Award is given annually for the best paper in plant systematics published in Castanea during the proceeding year. Their paper, ‘‘The population genetic structure of the Showy Lady’s-Slipper orchid (Cypripedium reginae Walter) in its glaciated and unglaciated ranges,’’ was published in the December 2007 issue of Castanea 72(4):248–261.