Birch Rust - Melampsoridium betulinum

Description

The rust fungus Melampsoridium betulinum affects the leaves of Birch species (and sometimes Alder)  and alternates its life cycle with Larch.

Identification difficulty
Habitat

Areas where the host species Birch, Alder and Larch occur.

When to see it

When the host species are in leaf.

Life History

Since both host species are deciduous it is also thought to overwinter in buds, as well as producing resting spores.

UK Status

Widespread and fairly frequent in Britain.

VC55 Status

Status in Leicestershire and Rutland not known.

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Leicestershire & Rutland Map

MAP KEY:

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

UK Map