Coleosporium tussilaginis

Alternative names
Coleosporium petasitis

The rust fungus Coleosporium tussilaginis produces tubules containing rust spores on pine needles and later rust pustules on the leaves of Colt’s-foot, Butterbur and Groundsel species.

Identification difficulty

Where the host species occur.

When to see it

Best seen on the underside of Colt’s-foot leaves when that plant is in leaf.

Life History

See 'Description'.

UK Status

Widespread and fairly frequent in Britain.

VC55 Status

Status in Leicestershire and Rutland not known.

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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