Puccinia violae DC.    

Kingdom: Fungi
Phylum: Basidiomycota
Subphylum: Pucciniomycotina
Class: Pucciniomycetes
Order: Pucciniales

British distribution: Widespread, frequent.
World distribution: Europe, Asia, North Africa, North & South America.

Puccinia violae
Puccinia violae: telial stage on leaves of Hairy Violet (Viola hirta), Harting Down, Sussex, 1986.

An autoecious rust on Viola species (violets, pansies). It is frequent to common in the wild and sometimes appears also on cultivated plants. Shown here is the telial stage, forming brown sori on the undersides of the leaves, resulting in some discolouring and deformation.
The aecial stage (not shown) causes a more systemic infection, resulting in swollen areas of the leaves, leaf-stalks and stems, which then bear tiny clusters of orange aecia. This stage is common but easily overlooked.

For an explanation of the terms used in this account, go to the profile of the Pucciniales.

© A.J. Silverside
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