A close up of an orchid flower. The Orchidaceae are a diverse and widespread family of flowering plants with colorful and fragrant blooms, commonly known as the orchid family. Along with the Asteraceae, they are one of the two largest families of flowering plants, with between 21,950 and 26,049 currently accepted species, found in 880 genera. Selecting which of the two families is larger is still under debate, as concrete numbers on such enormous families are constantly in flux. Regardless, the number of orchid species equals more than twice the number of bird species, and about four times the number of mammal species. The family also encompasses about 6–11% of all seed plants.