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Ransoms rust

Observed: 14th April 2011 By: kcf32
S159 Neighbourhood Nature - course completeShropshire Wildlife Trust
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Ransoms rust 2011-04-14

A lot of the Ransoms in the vegetation of a woodland by a stream are infected with this orange rust on the underside of the leaves which can be seen as a discolouration on the upper leaf surface.
Looking at "The British Rust Fungi" (which can be downloaded from
there are four rusts that affect Ransoms:
Puccinia winteriana;
Melampsora allii-fragilis;
M. allii-salicis-albae and
M. allii-populina.
Whilst not understanding a lot of the text only one entry mentions the torn epidermis as shown in the photograph and that is M. allii-fragilis (page 345).


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Some fungi are very poisonous so a mistaken ID could have serious consequences.

Species interactions

No interactions present.