Taphrina farlowii Sadebeck, 1890

on Prunus

Taphrina farlowii: galls on Prunus serotina

Prunus serotina, Otterlo, de Zanding © Arnold Grosscurt

Taphrina farlowii galls

Prunus serotina, Belgium, prov. Namur, Barvaux-Condroz © Jean-Yves Baugnée

Taphrina farlowii: galls on Prunus serotina

Prunus serotina, Huijbergen: heavy infestation

Taphrina farlowii: old  gall on Prunus serotina

Prunus serotina, Wouwsche Plantage: the infested leaf dies off

Taphrina farlowii causing shoot die back on Prunus serotina

Prunus serotina, Bergen op Zoom: shoot die back

Taphrina farlowii on Prunus serotina

Prunus serotina, Epe, Welna © Hans Jonkmn

Taphrina farlowii on Prunus serotina

another image

_2992_2

final stage

Taphrina farlowii: galled inforescence of Prunus serotina

Prunus serotina, Bargerveen © Ben van As: galled inflorescence

gall

even the fruits may be galled!

hostplants

Rosaceae, narrowly monophagous

Prunus serotina.

notes

Until recently leaf curls in Prunus serotina were attributed in the European literature to Taphrina deformans. However, German mycologists discovered that a separate species was involved, that in the United States commonly was associated with this plant. Surprisingly, it is almost certain that Sadebeck described the fungus in 1890 on the basis of material collected in Germany. This implies that most probably the fungus was introduced into Europe together with its host plant.

On several localities around Bergen op Zoom in 2012 heavy infestations were seen, in some cases leading to die back of the young shoots. Perhaps that the “wood pest” finally has got its biological control agent?

references

Dietrich (2016b), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Mix (1936a, 1949a), Koops (2013a).

15/05/2017

pub 25.v.2017 · mod 13.viii.2017