Horror, Sleaze and Trash.

 Corn smut fungus (Ustilago maydis). Spores of this fungus overwinter in infected plant debris and the soil. Wind and manure from animals that have eaten infected corn can also introduce the spores into the garden.The fungus infects the plant through wounds caused by cultivation, hail, or insects. It can also infect newly formed silks. Galls are usually larger and more obvious on the ears, but you may also find them on the leaves, stalk, tassels, and aerial roots. In some cultures it is considered a delicacy