Iris biglumis Vahl; I. ensata Thunberg var. chinensis (Fischer) Maximowicz; I. iliensis Poljakov; I. lactea var. chinensis (Fischer) Koidzumi; I. longispatha Fischer; I. pallasii Fischer var. chinensis Fischer.

Outer perianth segments pale violet, or milky white with purple veins; inner segments pale violet. 2 n = 40*, 50*.

Hillsides, grasslands, roadsides; 600--3800 m. Anhui, Gansu, Hebei, Heilongjiang, Henan, Hubei, Jiangsu, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Xinjiang, Xizang [Afghanistan, N India, Kazakhstan, Korea, Mongolia, Pakistan, Russia].