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Sporisorium sorghi is a species of fungus in the Ustilaginaceae family. It is a plant pathogen, causing covered smut of "sorghum" spp. such as "Sorghum bicolor" ("S. vulgare") (sorghum), "S. sudanense" (Sudan grass), "S. halepense" (Johnson grass) and "Sorghum" "vulgare" var. "technichum" (broomcorn).