Acer campestre

native to much of continental Europe

monoecious, the flowers are produced in spring at the same time as the leaves open, yellow-green, in erect clusters 4–6 cm (1.6–2.4 in) across, and are insect-pollinated. The fruit is a samara with two winged achenes aligned at 180°, each achene is 8–10 mm (0.31–0.39 in) wide, flat, with a 2 cm (0.79 in) wing.^[3][4]

varieties, not accepted as distinct by all authorities, are:^[3][5]

native range of field maple includes much of Europe, including Denmark, Poland and Belarus, England north to southern Scotland (where it is the only native maple), southwest Asia from Turkey to the Caucasus, and north Africa in the Atlas Mountains.^{[3][4][5][6][7][8][9]} In many areas, the original native range is obscured by widespread planting and introductions.^[10] In North America it is known as hedge maple^[11][12] and in Australia, it is sometimes called common maple.^[13] In Nottinghamshire, England it was known locally as dog oak.^[14]

acidic soil.^[9]

Nectria galligena, and verticillium wilt Verticillium alboatrum. The leaves are also sometimes damaged by gall mites in the genus Aceria, and the aphid Periphyllus villosus.^[15]

OPALS rating of 7.^[17]

habit, or occasionally both; several have been lost to cultivation.^[21]