Abstract
Abstract A description is provided for Trabutia quercina . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Quercus alnifolia, Q. coccifera, Q. dilitata, Q. ilex, Q. incana, Q. laurifolia, Q. lusitanica, Q.? mespilifolia, Q . murbeckii, Q. nigra, Q. semecarpifolia, Q. sessiliflora, Q. virens . DISEASE: Tar spot of leaves, especially along veins; initially forming crustose stromata composed of radiating mycelium, eventually with radially arranged conidiomata and then ascomata. GEOGRAPHICAL DISTRIBUTION: Algeria, Cyprus, France, Germany (possibly introduced), India, Italy, Myanmar, Pakistan, Portugal, Spain, USA (Florida, Louisiana, Mississippi, South Carolina). TRANSMISSION: Not studied; ascospores may be dispersed by wind or watersplash. The asci deliquesce at least in some circumstances (Barr, 1987). The conidia probably also have a dispersal/disseminative function.
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