Northern Birch (Betula pubescens pumila)
Description
Betula pubescens is commonly known as downy birch, with other common names including moor birch, white birch, European white birch or hairy birch. It is a deciduous tree growing to 0 to 0 m (33 to 66 ft) tall (rarely to 7 m), with a slender crown and a trunk up to 70 cm (8 in) (exceptionally m) in diameter, with smooth but dull grey-white bark finely marked with dark horizontal lenticels. The shoots are grey-brown with fine downy. The leaves are ovate-acute, to 5 cm (0.8 to .0 in) long and .5 to 4.5 cm (0.6 to .8 in) broad, with a finely serrated margin. The flowers are wind-pollinated catkins, produced in early spring before the leaves. The fruit is a pendulous, cylindrical aggregate to 4 cm (0.4 to .6 in) long and 5 to 7 mm (0. to 0.3 in) wide which disintegrates at maturity, releasing the individual seeds; these seeds are mm (0.08 in) long with two small wings along the side.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum: Magnoliophyta
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Class: Magnoliopsida
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Order: Fagales
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Family: Betulaceae
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Genus: Betula
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