Dwarf bunt
General Tilletia controversa is a plant pathogen. It is a fungus known to cause the smut disease TCK smut in soft white and hard red winter wheats, as [...] on all spikelets, showing the bunt (smut spore) they contain, which is larger than a normal kernel. The bunt balls are grey-brown. They rupture at harvest [...] eventually grow inside the kernels. When that happens, the fungal mycelium turns into teliospores and the whole kernel becomes a bunt ball full of teliospores