Alexanders Rust - Puccinia smyrnii


Puccinia smyrnii is a rust fungus that affects Alexanders (Smyrnium olusatrum). Both surfaces of the leaves, and the stem may be thickened and blistered by spermogonia and aecia, followed by dark brown telia on the leaf underside.

Identification difficulty

It is found on Alexanders (Smyrnium olusatrum)

When to see it

Spring and summer.

UK Status

Most records come from the coasts of England and Wales, but as the host plant moves inland, sometimes along salted roads, the rust fungus may be expected to occur more widely as well.

VC55 Status

Infrequent or under recorded in Leicestershire and Rutland. The Burbage Wood record of 25th March 2016 is believed to be the first confirmed record for VC55.  However the host plant, Alexanders is spreading in our area and Puccinia smyrnii may well turn up more frequently.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map