Ulmus procera, the English Elm or Atinian Elm was, before the advent of Dutch elm disease, one of the largest and fastest-growing deciduous trees in Europe, often exceeding 40 m in height with a trunk up to 2 m in diameter. The largest specimen ever recorded in England, at Forthampton Court, near Tewkesbury, was 46 m tall (Elwes & Henry, 1913). The leaves are dark green, almost orbicular, < 10 cm long, without the pronounced acuminate tip at the apex typical of the genus. Wind-pollinated, the small, reddish-purple flowers are without petals, and appear in early spring before the leaves. The tree does not produce fertile seed, and propagation is entirely by root suckers.

Leaf: alternate, simple, ovate to oblong, 3 to 5 inches long, 1 to 3 inches wide, margin coarsely and sharply doubly serrate, base conspicuously inequilateral, upper surface green and glabrous or slightly scabrous, paler and downy beneath.

A survey of genetic diversity in Spain, Italy and the UK revealed that the English Elms are genetically identical, clones of a single tree, the Atinian Elm once widely used for training vines. although there is no record of its introduction to Britain, it probably arrived with the Romans, a hypothesis supported by the discovery of pollen in an excavated Roman vineyard. The introduction of the tree to Spain from Italy is recorded by the Roman agronomist Columella in his treatise De Re Rustica, written circa AD 50, meanwhile more recent research has also identified it as the elm grown in the vineyards of the Valais, or Wallis, canton of Switzerland.