Alder Tongue Gall on the march!

alder tongue gall

Once considered a rarity, the somewhat hideous sight of the Alder tongue gall (caused by the fungi Taphrina alni) is an increasingly common one across the country. On 7.8.2011, I found it in Surrey near the Rye stream beside the M25 near Leatherhead, a few days later on 19.9.2011 it was abundant on a small alder growing in a small balancing pool in a quarry at Hoddesden, Hertfordshire (possibly the first county record). At Beamish open air museum, Durham on 27.7.2012 a small planted alder was groaning under hundreds of tongues, with several coming from every cone.

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