Razumovia cochinchinensis (Loureiro) Merrill var. lutea H. Hara, J. Jap. Bot. 17: 397. 1941; Centranthera rubraH. L. Li.

Plants slender. Calyx 8-10 X 3-4 mm. Corolla entirely yellow or rarely with pink lobes, 1.5-2.5 cm.

Wastelands, rice fields; near sea level to 1100 m. Anhui, Fujian, Guangdong, Guangxi, Hainan, Hunan, Jiangsu, Jiangxi, Sichuan, Xizang, Yunnan [Cambodia, India, Japan, Korea, Laos, Malaysia, Myanmar, Philippines, Thailand, Vietnam].