Teratosphaeria zuluensis

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canker symptoms on Eucalyptus trees caused by Teratosphaeria zuluensis and T. gauchensis (click on image to enlarge it)
Author(s): M.J. Wingfield
Source: Molecular Plant Pathology (2019) 20, p. 11

Teratosphaeria zuluensis (M.J. Wingf., Crous & T.A. Cout.) M.J. Wingf. & Crous 2009

This fungus causes stem canker of eucalypts like several other species of Teratosphaeria. It is widely distributed and has been reported from Africa, eastern Asia and Mexico. New infections typically start in spring as 2-5 mm necrotic lesions on young parts of the stems. The lesions enlarge to cankers filled with gum, resulting in cracks and malformations. Severe infections girdle the stems, epicormic shoots develop and the tops of the trees die.

Synonyms:
Colletogloeopsis zuluensis
Coniothyrium zuluense
Readeriella zuluensis

For a review see Aylward et al. (2ß19).