Chinese Gall/ Galla Chinensis/ Gallnuts/ Nutgall

Chinese gall, also referred to as Chinese gallnuts (or nutgalls), is a plant excretion produced when irritants are released by the larvae of gall insects, such as those of the Cynipidae family, the gall wasps. A major commercial source of medicinal gallnuts is oak trees, which yield the Chinese herb moshizi, but a similar material is found on Chinese sumac (Rhus species), produced by the activities of a type of aphid; these galls are called wubeizi by Chinese herbalists. Above are "mo shi zi" Above are "wu bei zi"