Appendicula, commonly known as stream orchids or 牛齿兰属 (niu chi lan shu), is a genus of flowering plants in the family Orchidaceae. Orchids in this genus are epiphytic, lithophytic or rarely terrestrial plants herbs with many flat, often twisted leaves and small resupinate, white or greenish flowers. The sepals are free from each other but the lateral sepals and labellum are fused to the base of the column.The genus Appendicula was first formally described in 1825 by Carl Ludwig Blume who published ...