Description from Flora of China
Buchnera asiatica Linnaeus, Sp. Pl. 2: 630. 1753; Striga asiatica var. humilis (Bentham) D. Y. Hong; S. hirsuta Bentham; S. hirsuta var. humilis Bentham; S. lutea Loureiro.
Annuals, 10-20(-30) cm tall, entirely hirsute. Stems erect, 1, rarely branched. Leaf blade linear to narrowly lanceolate, 5-20 X 1-4 mm, sometimes reduced to scales. Flowers axillary, solitary or in a spike upward. Calyx 4-8 mm, 10-ribbed; lobes 5, as long as tube, subulate. Corolla usually yellow, rarely red or white; tube 0.8-1.5 cm, apically strongly curved; upper lip 2-lobed. Capsule ovoid, enveloped in persistent calyx. Fl. autumn.
The whole plant is used for treating intestinal parasites. This species is harmful to crops, particularly to sugar cane.
Crop fields, waste grasslands; below 800 m. Fujian, Guangdong, Guangxi, Guizhou, Hunan, Jiangxi, Taiwan, Yunnan [Bhutan, Cambodia, India, Nepal, Philippines, Sri Lanka, Thailand, Vietnam; Africa, America].