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. They are deciduous shrubs or small trees with pendent racemes of 4-petalled flowers which appear on the bare branches before the leaves. The plants have leaves with serrate margins. Stachyuraceae contains a single genus with eight species.
Rhynchoglossum Rhynchoglossum is a genus of plant in family Gesneriaceae. In recent times, members of the former genus "Klugia" are also included. Species within the broader genus are found in India, southern China to New Guinea and about three species in tropical America. The genus has a leaf arrangement that is termed as alternate-distichous and the leaves are asymmetric in shape. The flowers have two lips. The older genus "Klugia" had four stamens compared to the typical two but "Klugia" from southern India are found to be very close based on molecular evidence.