← Back to the catalogue Wheat stem rust Puccinia graminis Pers. Plate · Puccinia graminis Enlarged model, not to scale Description A cereal parasite that opens rust-coloured pustules on stems and leaves. It needs two different plants to complete its cycle. Curiosity The Ug99 race, detected in Uganda in 1999, became a threat to wheat worldwide. Sources GBIF · Wikidata
