Description from
Flora of China
Leaves thin, conspicuously fenestrate. Seed prickles T-shaped. Fl. and fr. Aug--Nov.
Rice fields, damp soil; near sea level to 3500 m. Anhui, Guizhou, Heilongjiang, Hubei, Jiangxi, Liaoning, Xizang, Yunnan [Bhutan, India, Japan, Korea, Nepal, Philippines, Sikkim, Thailand].
