Betula papyrifera (Programmes Coyote )

Betula papyrifera

White birch

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Nom français: Bouleau à papier, Bouleau blanc

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LEAVES – Simple, alternate, oval to heart-shaped, double-toothed except near the base. Dark green on top, lighter and more or less downy underneath.
BARK – Smooth and dark brown on young twigs. Trunk and older twigs are creamy white. The bark splits easily around the tree into papery layers. It has dark, stroke-like, horizontal marks called ‘lenticels’.
FLOWERS – Wind-pollinated catkins. Paper birch is monoecious, meaning that one plant has both male and female flowers.
FRUITS – The mature fruit is composed of numerous tiny winged seeds packed in the catkin. They drop between September and the spring.

Medium-sized deciduous tree typically reaching 20-30 m. Common tree species within the northern latitudes. Found in all of Canada from the maritimes to Yukon. Can grow in many soil types, from steep rocky outcrops to flat muskegs of the boreal forest. Paper birch needs light to grow and is typically observed in young forests after a disturbance. It is often one of the first species to colonize a burned area. The wood is hard and often used for pulpwood and firewood.

Fontes e Créditos

(c) Plant Image Library, alguns direitos reservados (CC BY-SA), http://commons.wikimedia.org/wiki/File:Betula_papyrifera_(Paper_Birch)_(32521220664).jpg
(c) Krzysztof Ziarnek, Kenraiz, alguns direitos reservados (CC BY-SA), http://commons.wikimedia.org/wiki/File:Betula_papyrifera_kz1.JPG
(c) Plant Image Library, alguns direitos reservados (CC BY-SA), http://commons.wikimedia.org/wiki/File:Betula_papyrifera_(Paper_Birch)_(32080171872).jpg
(c) Alice Roy-Bolduc, alguns direitos reservados (CC BY-SA)

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