Acer trees are planted mainly for the beauty of their leaf colour that is an attraction particularly in autumn. For some, however, it is the many variations of their leaf shape that appeals. What doesn't figure in people's choice of acer, as far as I know, is their winged keys, technically known as "samaras". When I looked at them on our acer the other day I was struck by their delicacy and colour, and was motivated to photograph this small cluster.
photo © T. Boughen Camera: Olympus OMD E-M10