Alnus × mayrii — identification & habitat

Downy East Asian alder is a tree formed by a natural cross between Manchurian alder and Japanese alder. Its leaves and young twigs can show a mix of the two parents' features.

Appearance

Appearance: Individual trees vary; some resemble one parent more closely than the other.
Growth form: A deciduous tree.
Leaves: Its leaves are broader than those of Japanese alder, with rusty hairs on the undersides and young shoots.

Look-alikes

Japanese alderAlnus japonica

Look for broader leaves and rusty hairs under the leaves and on young shoots in this . Because hybrids vary, a single leaf photo may not settle the identification.

Why they get mixed upOne of its parent species.

Manchurian alderAlnus hirsuta

Manchurian alder usually has rounder, more visibly lobed leaves. This hybrid can be intermediate, so leaf shape alone may be inconclusive.

Why they get mixed upIts other parent species.

Where it lives

Typical habitats: Marshy ground
Range: It is native to Korea, Japan, and the Russian Far East.

Life cycle

Reproduction: It arises from a cross between Manchurian alder (Alnus hirsuta) and Japanese alder (Alnus japonica).

Name and classification

About the name: This hybrid is also called downy East Asian alder.

Conservation

IUCN Red List: NENot EvaluatedNot yet assessed

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