Ulmus laevis

White elm (Ulmus laevis)

The white elm (Ulmus laevis ), also called flutter elm, is a large tree of the genus of the elm (Ulmus ) and belongs to the family of Elm Family ( Ulmaceae ). The elm is up to 35 meters high and is a decidious plant.

Elm trees are easily recognized by their asymmetrical leaves. Contrary to widespread opinion, the elm does not cross with other elm species, such as field or elm. The flower buds of the elm are broad and conical, contrary to the more rounded buds of the field and elm. The leaf buds are bi-colored and slender conical. The bud scales are light brown to reddish brown and have a dark edge. The bark is rough with peeling scales even in young trees.

The elm is found mainly in lowland forests and on groundwater soils. It tolerates flooding of more than 100 days a year. An adjustment to these particular soil conditions represent buttress roots, they can form. These special roots are a rarity in native tree species.

The beautifully drawn wood of the elm has in relation to the field and elm to a higher toughness. Otherwise, the wood properties are rather unfavorable.

From the elm Dutch elm disease is much less affected than other elms. The Great elm bark beetle ( Scolytus scolytus ) and the little elm bark beetle ( Scolytus multistriatus ), which are the main carriers of dying elms, the elm fly due to rare beef ingredients. Against the ascomycete Ophiostoma novo - ulmi, it has incomplete resistance mechanisms.

Under the aspect of conservation of elm is of particular importance. It provides for certain species, for the elm leaf flea ( psylla ulmi ), the only habitat dar.