Puccinia recondita

The aecial stage of the rust fungus Puccinia recondita causes galls on plants in various families including Ranunculaceae and Boraginaceae (e.g on Meadow-rue Thalictrum flavum, or Bugloss Anchusa arvensis and Viper's Bugloss Echium vulgare).  The orange aecia are borne on swollen or raised areas on the leaves.  The alternating generation is on Rye or Wheat (Secale and Triticum) causing yellowish to brown spots on the leaves.  It is not a gall-causer on this host.  It is likely to be a complex of species, varieties and subspecies. 

You must identify the host plant; photograph under and upper side of leaves

Where untreated cereal crops are grown.

Spring and summer.

Widespread and fairly frequent in Britain.