Teratosphaeria stem canker is an important disease of Eucalyptus species in many parts of the
world where these trees are intensively propagated in plantations. Symptoms similar to those
of Teratosphaeria stem canker were observed on Eucalyptus grandis and a E. grandis x E.
camaldulensis hybrid clone in the Central Highlands of Kenya. Symptomatic bark samples
were collected from two sites and the associated fungus isolated and identified using DNA
sequence analyses of multiple gene regions. The pathogen was identified as Teratosphaeria
gauchensis. This represents the first report of the disease and the pathogen in Kenya.