Comment: | The genus Alternaria is comprised of many common saprophytic (derive nutrients from dead and/or decaying organic matter) and plant pathogenic species. Alternaria spores can be typically found in the air, soil, decaying plant material, wood, and foods. Alternaria brassicicola (Schweinitz, Wiltshire) is a ubiquitous plant pathogenic fungus but also exists as a saprophyte. |