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

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

Nigel Cattlin / White mould (Athelia rolfsii) mycelium around the base of a peanut plant, Florida, USA, May

Nigel Cattlin / Stem rot (Sclerotinia sclerotiorum) a diseased and dying sunflower plant in seed in a commercial crop

Nigel Cattlin / Stem rot (Sclerotinia sclerotiorum) black sclerotia and rot on the stem base of a mature ripening sunflower

Nigel Cattlin / Stem rot (Sclerotinia sclerotiorum) black sclerotia and rot on the stem base of a mature ripening sunflower

Nigel Cattlin / Speckled snow mould (Typhula incarnata) sclerotia and necrotic damage to Barley (Hordeum vulgare) leaves. Scotland, UK. January.

Nigel Cattlin / Speckled snow mould (Typhula incarnata) sclerotia on base of young Barley (Hordeum vulgare) stem. Scotland, UK. January.

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