Cystorchis is a genus of flowering plants from the orchid family, Orchidaceae. It has 21 currently accepted species (June 2014), native to New Guinea, Southeast Asia, and the islands of the western Pacific. 1. * J.J.Sm. 2. * Ridl. 3. * J.J.Sm. 4. * Schltr. 5. * Schltr. 6. * (Hook.f.) Holttum 7. * (Blume) Blume 8. * Ames 9. * Schltr. 10. * Blume 11. * (Tuyama) Ormerod & P.J.Cribb 12. * Schltr. 13. * Schltr. 14. * J.J.Sm. 15. * J.J.Sm. 16. * J.J.Sm. 17. * J.J.Wood 18. * J.J.Sm. 19. * Schltr. 20. * Blume 21. * J.J.Sm.