Orchid flower (Bulbophyllum wendlandianum), seen from the side. The elongated spike is formed by the fusing of two of the sepals. The petals are much smaller (at right). Parts of other flowers are also seen (behind and at right). This orchid is found in the forests of South-East Asia. There are more than 30,000 species of orchids worldwide, many of which are grown as ornamental flowers.