Wheat bunt
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 and release [...] types are distinguished. The filiform basidiospores fuse in the middle with a basidiospore of the other mating type so that H-shaped structures are formed [...] happens, the fungal mycelium turns into teliospores and the whole kernel becomes a bunt ball full of teliospores. These balls break during harvest allowing the