Taphrina tosquinetii

Description

This is an acomycete fungus that causes large blisters on Alder leaves - on both surfaces. Eventually the blisters become covered in a white bloom as the spore-bearing asci develop on the surface.

Identification difficulty
Habitat

On Alder leaves.

When to see it

Spring and summer.

UK Status

Common

VC55 Status

Fairly common.

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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