The Orchidaceae is one of the two largest flowering plant families, containing over 100,000 species. Orchids are found all over the world apart from glaciers, with the richest diversity in the tropics. They have evolved specialized pollination mechanisms and highly modified flowers and roots. Orchids first appeared 76-84 million years ago, potentially coexisting with dinosaurs. They have a wide variety of uses including perfume ingredients and cultivation for their attractive blooms.