Taphrina wiesneri

Alternative names
Exoascus cerasi
Taphrina minor
Taphrina cerasi

Taphrina wiesneri is a fungal gall causer affecting Prunus species. The upperside of the affected leaves have hollow blisters that may be reddish brown above; their underside bears a layer of microscopical asci that, when fully developed, may give the surface a mealy aspect. Also many-years old witches’ brooms may be formed.

Identification difficulty
Recording advice

Good photographs required showing upper and lower leaf surfaces.


Where the host Prunus species occur.

When to see it

Galls may be found when the host species are in leaf.

UK Status

True status in Britain is difficult to determine due to lack of records.

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