Symptoms caused by Liberomyces pistaciae on Pistacia vera in vivo. a Plant killed by canker on trunk b Twigs dieback c, d Shoots wilted on infected twig e Gum and cracking of the trunk f, g Internal tissue of trunk cankers h Gum exudation on branch i Internal dark discolouration in cross section of branch j Necrotic tissue in longitudinal section of twig k, l External and internal cankers on twigs.