The fungus has caused serious damage to plane trees across Europe.

[3] The fungus has usually been considered to be a weak parasite causing only minor damage such as twig dieback in warmer Mediterranean climates.

[2] However, in the 21st century it has been found associated with branch death and rapid decay within other parts of Europe, most notably Germany and Austria, the Netherlands, and parts of France.

[2] Damage caused by this fungus has been reported in the southern United States.

[2] The first formal identification of the disease in the United Kingdom came in March 2011.