Are Daviesia and Rehmannia native to the same countries?
Rehmannia Rehmannia is a genus of six species of flowering plants in the order Lamiales, endemic to China.
Changnienia Changnienia is a genus of flowering plants from the orchid family, Orchidaceae. Only one species is known, Changnienia amoena, native to China (provinces of Anhui, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Sichuan, and Zhejiang).