Are Stachyurus and Corylopsis both native to eastern Asia?
Stachyurus: Stachyurus is the only genus in the flowering plant family Stachyuraceae, native to the Himalayas and eastern Asia. Corylopsis: Corylopsis is a genus of nearly 30 species of shrubs in the witch hazel family, Hamamelidaceae, native to eastern Asia with the majority of species endemic in China but with some also in Japan, Korea, and the Himalayas.
yes