Ostrya carpinifolia, the European hop-hornbeam, is a tree in the family Betulaceae. It is the only species of the genus Ostrya that is native to Europe.
The specific epithet carpinifolia means "hornbeam-leaved", from carpinus, the Latin word for "hornbeam".
Ostrya carpinifolia is a broadleaf deciduous tree, that can reach up to 24 metres (79 ft). It has a conical or irregular crown and a scaly, rough bark, and alternate and double-toothed birch-like leaves 3–10 cm long.
The flowers are produced in spring, with male catkins 5–10 cm (2–4 in) long and female catkins 2–5 cm (3⁄4–2 in) long. The fruit form in pendulous clusters 3–8 cm (1+1⁄4–3+1⁄4 in) long with 6–20 seeds; each seed is a small nut 2–4 mm (1⁄16–3⁄16 in) long, fully enclosed in a bladder-like involucre.
Uses
The wood is very heavy and hard, and was historically used to fashion plane soles.
Ostrya are used as food plants by the larvae of some Lepidoptera species.
