Catechu, a resin obtained from boiling chips of the wood of several tropical Acacia trees ( Acacia catechu, A. sundra, Uncaria gambir) contains up to 40% tannins was used much in Indian block printing and calico. the dye was also once produced in Java, Singapore, and Peru.

American Black Walnut and butternut (Juglans nigra, J. regia) contain a colorless dye, Juglone. extracted from the green nut hulls, this dye oxidizes to dark brown shades and can be very permanent, dyed with or without mineral fixation.

Quercus robur L., Quercus sp.
Fagaceae
common Oak

the common oak are much used in the tanning and dyeing industries even today. Oak trees can grow as tall as 35 meters and have thick, red-brown bark which is very rich in Tannins. the leaves and twigs can also be used for mordanting and colouring brown; ashes of oak wood is well suited to the production of ash-lye, an important chemical in the procese of natural dyeing.
Oak galls, also called "Oak apples", are growths on the oak branches caused by Gall wasps. Depending on the species and type of wasp, they lay their eggs under the bark, in the buds or on the leaves of the oak. this stimulates a type of allergic reaction by the tree, which produces a membranous clump very rich in tannic acid. oak apples and iron preparations are the primary ingredients in the original China Ink (later known as India ink) perhaps one of the most important inventions of mankind.