|5-20cm high, naked roots||10.00$ +1|
It can reach 4–8 metres (13–26 ft) tall with stems 10–25 cm (4–9+3⁄4 in) thick with smooth gray bark, but it can also remain relatively small in the shade of other plants. It typically grows with several trunks.
The leaves are green, rounded oval with a pointed tip, coarsely double-toothed, 5–11 cm (2–4+1⁄4 in) long and 3–8 cm (1+1⁄4–3+1⁄4 in) broad, with soft and hairy undersides.
The male flowers are catkins that form in the fall, and pollinate the single female flowers the following spring to allow the fruits to mature through the summer season.
The beaked hazelnut is named for its fruit, which is a nut enclosed in a husk with a tubular extension 2–4 cm (3⁄4–1+1⁄2 in) long that resembles a beak. Tiny filaments protrude from the husk and may stick into, and irritate, skin that contacts them. The spherical nuts are edible, though small and surrounded by a hard shell. The beaked hazel is the hardiest of all hazel species, surviving temperatures of −50 °C (−58 °F) at its northern limits.
It has a shallow and dense root system which is typically only 15 centimetres (5.9 in) deep, with a single taproot which may extend 0.6 metres (2.0 ft) below the surface.
There are two varieties, divided by geography: