Orchid flowers (Miltonia spectabilis). The large, light purple petal on each flower is a specialised structure called the lip. It attracts pollinators to the flowers. There are several colour variants of this orchid, this one being purple. This orchid is found in the forests of Brazil. It is an epiphytic orchid (one that grows in trees). There are more than 30,000 species of orchids worldwide, many of which are grown as ornamental flowers.