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Stem gall of Tormentil - Potentilla erecta | by Curiosity thrills.
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Stem gall of Tormentil - Potentilla erecta

Tormentil is an herbaceous perennial of acid grassland thru'out the UK.


I had been looking for fungi beneath some Sitka spruce when I sat down for a rest and spotted this. Close looking at the other Tormentil plants revealed no other galls. Lucky or what?


I have found reference on the net (not in my books) to a gall called Xestophanes brevitarsis (a gall wasp) but that is a root gall on this plant species.


Any help appreciated on this one.

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Taken on September 17, 2012