Suberin is a waxy, waterproof substance that is found in plants. It is described as having a 'rubbery' material. Suberin blocks the movement of water and solutes. It is in the walls of cork cells. Suberin is named after the cork oak, Quercus suber.
Suberin Media
Contributions from the Botanical Laboratory, vol. 12 (1934) (20065769024)