Nigel Cattlin / Ergot (Claviceps purpurea) sclerotium on cocksfoot grass (Dactylis glomerata) seedhead in late summer, Berkshire, September

Nigel Cattlin / Ergot (Claviceps purpurea) fungal disease, showing ergots / sclerotia replacing grains in a ripe wheat (Triticum aestivum) ear.

Nigel Cattlin / Ergot (Claviceps purpurea) sclerotium, ergots, replacing the seed in a ryegrass (Lolium sp.) grass seedhead

Nigel Cattlin / Ergot (Claviceps purpurea) ergots replacing grains in a ripening wheat ear