genus of as many as 200 species of orchids, family Orchidaceae, that are found on rocks, soil, or dead trees throughout Asia and some Pacific islands. All members of the genus have pseudobulbs (bulblike stems) with one or two leaves and a spike of flowers.

Coelogyne cristata, native to the Himalayas, has a beautiful white flower with golden hairs on its crested lip. Coelogyne pandurata, known as the black orchid because of the black, velvety markings on its fiddle-shaped lip, has from 5 to 15 greenish yellow flowers.