Are Stachyurus and Corylopsis both native to 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. This genus is also known from the extinct species "Corylopsis reedae" described from Eocene leaf fossils found in Washington State, USA.
Bridelia stipularis Bridelia stipularis is a perennial evergreen climber grows over hedges and bushes and sometimes on bigger trees. It is native to Southeast Asia, southern China, and the Indian Subcontinent. Used as medicines in Malaysia and the Philippines. "Bridelia stipularis", as other "Bridelia" species, used as food plants by the larvae of some Lepidoptera species including "Endoclita malabaricus".