Description from Flora of China
Orobanche cumana Wallroth, Orob. Gen. Diask. 58. 1825; O. bicolor C. A. Meyer; O. cernua subsp. cumana (Wallroth) Soó.
Corolla pale yellow, tube distinctly enlarged and turned into a rounded curve. Filaments glabrous. 2n = 24.
Parasitic on species of Artemisia Linnaeus.
Orobanche cernua is highly variable in plant size, division of calyx, size and color of flower, and pubescence of filaments. It requires further studies, and the account adopted here is
Grasslands, slopes, forests, roadsides; 500-3000 m. Gansu, Hebei, W Jilin, Nei Mongol, Qinghai, Shaanxi, Shanxi, Xinjiang [Afghanistan, Kazakhstan, Kyrgyzstan, Mongolia, Nepal, Russia, Tajikistan, Turkmenistan, Uzbekistan; SW Asia, Europe].