Black leaf spot

Black leaf spot commonly refers to the following Alternaria spp. all of which are diseases of Brassicas:
 * Black leaf spot or brassica dark leaf spot, caused by Alternaria brassicicola
 * Black leaf spot or grey leaf spot, caused by Alternaria brassicae
 * Black leaf spot (Brassica), caused by Alternaria raphani
 * Black leaf spot (Strawberry), caused by Alternaria alternata f.sp. fragariae