Wildflower Macro - Tiny Tuesday

I took the easy route to photograph this unknown wildflower - breaking of a flower head to take home and photograph under my digital microscope. It is quite a small flower, about 0.75 cm long and grows at the top of hairy stalk with leaves which divide into three lobes with a serrated edge. I've tried to identify it through the internet but failed miserably. Any ideas would be very much appreciated.