Recently, many researchers have been developing the various types of micro aerial vehicles (MAV). These developments are conducted on the basis of the computational and experimental fluid dynamics studies. We believe that the findings from the winged seed of plants would serve useful information for the development of such aerial vehicles. In this study, we investigated the gliding performance of the winged seed of Alsomitra macrocarpa. Furthermore, the microasperity structure on the surface of the seed was observed and measured using the conforcal laser microscope.