Italian Alder

Alnus cordata

The Italian alder produces cone-like structures as its fruiting bodies.

Arboretum Location: The Museum & Science Room

Division: Shrub

Family: Betulaceae

Origins: Southern Italy

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About

Italian Alder

The bark of Alnus cordata, commonly known as Italian Alder, is characterised by a smooth and greyish texture when the tree is young, gradually developing shallow furrows and becoming darker as it matures. The bark tends to display a visually interesting pattern as it matures, adding aesthetic appeal to the tree.

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The Appearance

A medium to large deciduous tree with a conical shape and glossy, dark green leaves that remain on the tree until late autumn.

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The Produce

These structures are referred to as strobiles or catkins.

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The Flowers

Produces long, yellow catkins in early spring, followed by small, woody cones.

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The Leaves

These leaves are elliptical in shape, featuring a glossy, dark green colour on the upper surface.

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The Bark

The bark is smooth and gray, becoming slightly fissured with age.

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The Habitat

Prefers moist, well-drained soils and full sun. Commonly found along riverbanks and in wetlands.

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The Ecology

Provides habitat and food for various wildlife, including birds and insects. The roots improve soil fertility by fixing nitrogen.

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The Culture

Used in traditional medicine and for timber, particularly in waterlogged conditions as the wood resists decay.

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Fun Facts

The Italian Alder is valued for its ability to improve soil fertility through its symbiotic relationship with nitrogen-fixing bacteria in its roots.

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