Ponerorchis is a small genus of Asian terrestrial tuberous orchids included in the orchid family Orchidaceae. It is native to China, Siberia, the Russian Far East, Japan, Korea, and the Himalayas. It has been suggested that Ponerorchis should be broadened to include Chusua, and that Hemipilia should include single `orphan' species of Ponerorchis and Habenaria In horticultural trade this genus is abbreviated as Pnr. These orchids, a wide variety of mostly cultivars of Ponerorchis graminifolia, are rarely grown outside Japan.