Sorbus domestica (Service Tree, or sometimes True Service Tree to distinguish it from the Wild Service Tree; syn. Cormus domestica (L.) Spach) is a species of Sorbus native to western, central and southern Europe, northwest Africa (Atlas Mountains), and southwest Asia (east to the Caucasus).
It is a deciduous tree growing to 15–20 m (rarely to 30 m) tall with a trunk up to 1 m diameter, though can also be a shrub 2–3 m tall on exposed sites. The bark is brown, smooth on young trees, becoming fissured and flaky on old trees. The winter buds are green, with a sticky resinous coating. The leaves are 15–25 cm long, pinnate with 13-21 leaflets 3–6 cm long and 1 cm broad, with a bluntly acute apex, and a serrated margin on the outer half or two thirds of the leaflet. The flowers are 13–18 mm diameter, with five white petals and 20 creamy-white stamens; they are produced in corymbs 10–14 cm diameter in late spring, and are hermaphrodite and insect pollinated. The fruit is a pome 2–3 cm long, greenish-brown, often tinged red on the side exposed to sunlight; it can be either apple-shaped (f. pomifera (Hayne) Rehder) or pear-shaped (f. pyrifera (Hayne) Rehder).
It is a long-lived tree, with ages of 300–400 years estimated for some in Britain.
The largest and perhaps oldest known specimen in Europe is near the town of Strážnice in the province of Moravia, Czech Republic. Its trunk measures 458 cm in circumference, with a crown 11 m high and 18 m across. It is estimated to be around 400 years old.