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Noun1.Sphacelotheca - genus of smut fungus
smut fungus, smut - any fungus of the order Ustilaginales
family Ustilaginaceae, Ustilaginaceae - a fungus family of loose smuts
head smut, Sphacelotheca reiliana - smut fungus attacking heads of corn or sorghum and causing a covered smut
References in periodicals archive ?
Sphacelotheca holci, as it's called scientifically, is a natural fungus that attacks johnsongrass, a perennial weed that plagues many crops.