Nigel Cattlin / Powdery mildew (Blumeria graminis) mycelium and cleistothecia and brown leaf rust (Puccinia triticina) pustules on a wheat leaf

Nigel Cattlin / Brown or leaf rust (Puccinia triticina) infection on flag leaves and ears of a wheat crop in green unripe ears

Nigel Cattlin / Photomicrograph of wheat leaf or brown rust (Puccinia triticina) sporulating pustules and spores with powdery mildew on a wheat leaf

Nigel Cattlin / Wheat leaf rust or brown rust (Puccinia triticina) infection on the flagleaves and crop of a winter wheat in ear

Nigel Cattlin / Wheat leaf rust or brown rust (Puccinia triticina) infection on the flagleaves and crop of a winter wheat in ear