The name of this flower is Butterfly Lily but it belongs NOT to the Liliaceae, rather, it belongs to the Zingiberaceae family. These flowers are very fragrant and are widely used as a air-freshener in the hottest months here. This photo was taken in the market plaza outside the Po Lin Monastery here in Hong Kong.
Hedychium coronarium J.KoenigZINGIBERACEAELocal: Itamonte, MG, Brasil.Ref.: Amaral, M.C.E. et. al. Guia de Campo para Plantas Aquticas e Palustres do Estado de So Paulo. Holos, 2008.