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Tar Spot Fungus

What is probably Diatrypella quercina growing on a twig from an oak tree (Quercus sp).

I took the following specimen:

This yielded the following spores (magnification x600, field width 86um):

These are strongly curved and about 9 x 2um which agrees well with the "strongly curved, 8-12 microns long, 2-3 microns wide" given here at Pilzbestimmer.de.

First photo and specimen taken in Whiteknights Park, Reading, UK, on 2014-02-22.

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