Abstract

Colletotrichum acutatum J.H. Simmonds has been identified from leaves and the exocarp of fruit of diseased pistachio trees (Pistacia vera L.) growing in New South Wales. When the fungus was reinoculated onto the leaves and nuts of pistachio, it caused symptoms similar to those observed in the field. To our knowledge, C. acutatum has not been previously reported causing a disease of pistachio anywhere in the world.