Orchid flower (Miltonia flavescens). The pink and white petal is a specialised structure called the lip. It attracts pollinators to the flower. This orchid is found in the forests of Paraguay and Brazil and surrounding areas. This specimen is from Argentina. 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.