Botryosphaeria obtusa

Botryosphaeria obtusa is a plant pathogen that causes Frogeye leaf spot, Black rot and cankers on many plant species. On the leaf it is referred to as Frogeye leaf spot; this phase typically affects tree and shrubs. In fruit such as the apple, cranberry and quince, it is referred to as Black rot, and in twigs and trunks it causes cankers.