Field maple is a small, deciduous tree which can be up to 25m tall, but often reaches only 15m. It has fissured often corky bark. It prefers lime-rich soils in woodland, often as an understory to the oak, or in scrub and hedges. Its five petalled flowers are small and green. They are produced in upright clusters of 10-20 after the leaves have developed. Male and female flowers exist on the same tree. The males have eight stamens, the females a forked style. The fruits consist of a pair of 'propellers' each with a seed held at 180 degrees. The leaves have 3-5 lobes. They are hairless above but downy below on the veins. The leaf surface often has 'blisters' caused by a gall-forming mite. Picture taken at Stevington, Bedfordshire - April 30th 2006