Aremonia agrimonioides Bastard Agrimony
As the English name suggests, this plant's flowers do look like those of an Agrimony but with the Strawberry shaped leaved I wrongly identified it as Duchesnia indica (Yellow-flowered Strawberry). It does grow in the British Isles dotted here and there but is native in Southern and central Europe
Forest in Bosco Quarto, Gargano, Italy 20th April 2009
Added October 25th 2009, updated Feb 27th 2010