Symptoms - Leaves discolour and wilt or fail to appear in spring. Gum exudes from infected trunks, roots and trunk may be covered with a white fungal web under the bark, and black bootlace-like strands can also occur beneath the bark and on the roots (resembling old roots).
Finally, clumps of honey-coloured, pale-stemmed
toadstools which glow at night may grow round the base or roots of
infected plants. Infected plants may die quickly or take a number
of years to die.