Puccinia purpurea is a fungal species and plant pathogen that causes rust on sorghum. It is found in temperate places worldwide, excluding colder parts such as Russia and Canada.

The pathogen was discovered in 1876 by Cooke, on the leaves of Sorghum vulgare in Maharashtra, India.

P. purpurea is also native to eastern Australia, except Queensland. Where, it is considered a pest.

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